WalkthroughintermediateUpdated: 10/24/2026

ASPIS Final Choice: One Decision, Two Endings

The ASPIS final choice is a single late-game decision that leads to one of two endings. See what official material confirms about each branch.

The ASPIS final choice is a single decision near the end of the story, and official material describes it only as one choice leading to two endings. Steam names the outcomes Let Go and World on Fire; it does not publish the dialogue, the requirements, or whether both can be reached in one run. This guide works within that limit.

ASPIS Final Choice Overview

The ASPIS final choice determines which of the game’s two endings you receive, so understanding the decision before you commit matters. ASPIS is built around a single late-story choice with two possible outcomes, and the official material does not reveal every requirement in advance. This guide explains what is confirmed about the final decision, how to approach the ASPIS last level without missing important story context, and what players should verify before making the irreversible selection.

ASPIS places engineer Andrey inside a system where time moves far faster than the outside world. The experiment was intended to last days, but well over a year elapses while the six volunteers remain inside. By the time the final choice appears, the story has accumulated the fate of Liza, the Institute of Cybernetics, and the strange places connected through the PEP-01. Because the official description presents the structure simply as “One choice. Two endings,” the safest approach is to finish the story, understand the deal or alternative being offered, and then select the ending that matches your interpretation.

What the ASPIS Ending Choice Represents

The ending decision is not just a cosmetic branch at the end of the game. It is the culmination of a story about responsibility, prediction, and the cost of manipulating events. The official Steam page identifies the setting as the USSR in 1987 and introduces Andrey, his deceased wife Anna, their daughter Liza, six volunteers, the Institute of Cybernetics, and OGAS terminals. Those details make the final selection feel personal because the player has followed one person through a system that changes both place and time.

The choice appears to involve accepting a proposed deal or rejecting it, although the official store page does not publish a full walkthrough of the dialogue options or their exact wording. That distinction is important. A screenshot can establish which prompt is selected, but it cannot establish the consequences of every earlier action. The best preparation is therefore to keep track of what the story has established about trust, sacrifice, and control, then use the final scene to make the decision that best fits your preferred conclusion.

Confirmed facts about the two endings

Confirmed elementWhat official material establishesWhat remains unclear
Number of endingsASPIS has two endingsExact dialogue and selection wording
Decision pointOne final choice leads to both outcomesWhether earlier optional actions alter availability
Core charactersAndrey, Anna, Liza, and six volunteers are central to the premiseEvery character’s complete ending outcome
Story settingAlternate-history USSR in 1987A complete list of every branch or scene
Release statusReleased on Steam and VK Play on October 23, 2026Any later revision to the ending structure
Achievement connectionTwo achievements are named “Let Go” and “World on Fire”The precise dialogue corresponding to each title

The achievement names are a particularly useful clue because the official Steam achievement list contains exactly two ending-related unlocks: Let Go and World on Fire. They confirm that the choice leads to meaningfully different conclusions rather than a short variation in dialogue. However, the names alone should not be treated as a complete answer. “Let Go” suggests release or surrender, while “World on Fire” suggests a more destructive conclusion, but the narrative context of the scene remains essential to understanding either result.

Prepare before the decision screen

Approaching the ASPIS last level with a clear objective can prevent an accidental or uninformed selection. Before reaching the final decision screen, note whether you intend to authorize the ASPIS proposal or refuse it, because each conclusion branches the story around Andrey, Liza, and the other volunteers. Use that objective to interpret the last prompts and judge which outcome matches your intended ending rather than assuming that the first highlighted option is the safest choice.

  • Read every terminal prompt carefully. Text may clarify what Andrey is being asked to authorize or surrender.

  • Listen to the complete conversation. The official material notes a custom subtitle system designed to synchronize voice, subtitles, and scene events, indicating that important dialogue is likely designed to be followed closely.

  • Track the fate of Liza and the other volunteers. Their outcomes can provide context for the responsibility embedded in the final proposal.

  • Compare the deal with the alternative. Do not focus on one visible option; identify what accepting or refusing implies for the people inside and outside ASPIS.

  • Save a separate record of your ending. The official achievement list confirms separate achievements for the two conclusions, so replaying is the most reliable way to see both without risking missing one.

For a broader route through the locations leading up to the decision, use the ASPIS full walkthrough. It can help you finish the final sequence with the story’s key interactions already completed, including the Liza and volunteer outcomes that shape the final proposal, so you can make the ASPIS last level choice from established story context rather than rushing into the decision screen. This is also useful when aiming for 100% completion, since the walkthrough provides a way to revisit any required scene or interaction before confirming the ending.

ASPIS Ending Choice Walkthrough Approach

A reliable ASPIS ending choice walkthrough should distinguish between confirmed mechanics and interpretation. The official ASPIS game page on Steam confirms the two-ending structure and the broader premise, but it does not publish the complete dialogue, a step-by-step puzzle solution, or a requirement chart for unlocking either conclusion. This guide therefore avoids inventing exact option labels that may not match your language or interface.

The practical walkthrough starts before the final interaction. Continue exploring the documented locations—the Institute of Cybernetics, the KGB building, the tunnels, the warehouse, the Red World, the red corridor, and Lukomorye—until the story naturally advances. These are the only named locations confirmed by official material. The game does not publish formal chapter names or a chapter count, so describing the route by those locations is more reliable than relying on invented episode labels.

Decision sequence at a glance

StageWhat to doWhy it matters
Finish required story interactionsContinue through the ending scene rather than leaving the system earlyThe final decision depends on reaching the intended conclusion
Examine the proposalRead every line and identify who benefits or losesThe choice reflects the story’s central conflict
Compare both responsesConsider acceptance and rejection as separate outcomesOne prompt is not necessarily the only meaningful option
Confirm the selectionMake the choice that matches your preferred interpretationA replay is needed for the other conclusion
Check the achievementLook for “Let Go” or “World on Fire”This confirms which ending was reached
Repeat with a clean routeReplay the final sequence without spoilersThe second ending requires a different selection

This sequence is deliberately simple because ASPIS’s ending is primarily narrative. The confirmed game systems include a Makarov pistol, melee combat, ammunition found in the environment, and the PEP-01 device used to open astral windows between layers of reality. Those systems matter during exploration, but official material does not identify any combat condition, collectible, or optional action as a requirement for either ending.

Read the scene as a consequence chain

When the final proposal appears, ask four questions. First, what does the deal change immediately? Second, who remains inside the accelerated system? Third, what happens to the people whose futures are supposedly being predicted or controlled? Finally, does refusing the deal solve the problem, preserve the current state, or create a different kind of loss?

This approach helps because ASPIS centers on a system intended to predict historical events. The official site describes ASPIS as a passage into spaces whose physical rules stop matching our own, while official announcements state that time inside moves hundreds of times faster. A proposal that appears to restore order may therefore carry consequences that cannot be measured by the immediate scene. The story’s final question is not merely “Which button do I press?” but “What definition of success is Andrey willing to accept?”

Handle the final menu carefully

  • Pause before confirming. The official Steam announcements confirm that a demo update made the pause menu genuinely pause the game, although this is a technical fact rather than a promise that the final menu behaves identically.

  • Look for both responses. A two-ending game may present the decision as a direct agreement or refusal, but interface structure should not be assumed from marketing summaries.

  • Avoid speed-running past the context. The choice can be more satisfying when you understand why the Director’s offer or the alternative appears here.

  • Keep the ending achievement visible. If the game provides an achievement notice, it provides the clearest immediate confirmation of the route taken.

  • Do not treat an achievement as a quality ranking. One conclusion is not automatically more correct than the other; they answer the same conflict in different ways.

A more detailed discussion of narrative outcomes appears in ASPIS ending consequences, which can help separate what the ending changes from what the final selection merely symbolizes. It is worth comparing the Director’s offer with the alternative response before confirming: one choice may determine how ASPIS resolves the central conflict, while the other may preserve ambiguity, alter the protagonist’s outlook, or change which consequences receive narrative emphasis. This distinction matters for 100% completion because collecting the ending achievement confirms the selected route, but it does not reveal whether the final choice actually produces a more favorable outcome. Reading the consequences page can therefore prevent the final menu from being interpreted as a simple “good” versus “bad” test when the available endings may represent different answers to the same conflict.

Two ASPIS Endings and Their Core Contrasts

The official achievement list gives the endings distinct thematic labels: Let Go and World on Fire. Those names imply a meaningful contrast without requiring the game to be reduced to a simple good-versus-bad label. The ASPIS final choice appears to ask whether the protagonist preserves control, accepts a costly bargain, releases responsibility, or triggers a more destructive outcome. The narrative purpose of the game is to let the player interpret which sacrifice is justified.

That framing is more useful than guessing from achievement names. “Let Go” can suggest relinquishing control or accepting that events cannot be safely mastered. “World on Fire” can suggest forcing a decisive rupture rather than accepting the proposed order. Neither phrase alone proves the complete ending, because a story ending often contains both relief and loss. The final scene may reward an interpretation that feels less clean than the menu wording suggests.

Comparison pointLet Go achievementWorld on Fire achievement
Thematic suggestionRelease, surrender, or acceptanceRupture, destruction, or decisive refusal
Emotional registerRelief mixed with lossConviction mixed with consequences
Story relationshipClosely associated with relinquishing controlClosely associated with forcing a decisive outcome
Confirmation methodUnlock the named Steam achievementUnlock the named Steam achievement
Player decisionSelect the route that ends in releaseSelect the route that ends in rupture

The best way to choose is to identify the ending you want before the prompt appears. If your preferred conclusion emphasizes acceptance, release, or a dangerous surrender, select the option that leads to Let Go. If you prefer the route in which Andrey rejects the proposed terms and forces an irreversible rupture, the World on Fire achievement marks that path. Because official material does not publish the exact option wording, always pair the achievement name with the final dialogue rather than relying on a screenshot alone.

Why both conclusions matter

One ending can be emotionally satisfying while the other feels more responsible, and that tension is the point. ASPIS asks players to consider whether ending suffering is justified when the outcome appears controllable. Choosing the conclusion that best reflects your values gives the story more impact than treating the decision as a puzzle with one mechanically correct answer.

The ASPIS Let Go ending guide provides a focused route to the release-themed conclusion, while the achievement list confirms that seeing the alternative is a legitimate goal in its own right. Neither route should be labeled canonically superior, because the official material advertises the choice as a defining feature rather than as a reward for one “correct” playthrough.

Last-Level Preparation Checklist

Approaching the ASPIS last level should involve a story checklist rather than a preparation checklist. There is no official requirement list, no published percentage tied to either ending, and no documented set of combat resources that unlocks one conclusion. Players seeking a broader completion objective can instead use the ASPIS achievement guide to review the twelve official achievements separately from the ending decision.

The most common mistake is assuming that more exploration guarantees access to both endings. Official information establishes one choice and two outcomes, but it does not announce optional-content thresholds or a requirement to collect every achievement-related object. A focused run can therefore be enough to reach a conclusion, while a second run remains necessary if you want the other ending.

Before you enter the ending sequence

  • Save the game if the interface allows it. Although the official material does not explicitly confirm save behavior around the choice, taking a manual save is a sensible precaution when available.

  • Review the central relationships. Andrey’s connection to Anna and Liza gives the decision emotional context that puzzles alone cannot supply.

  • Remember the system’s accelerated time. well over a year elapses inside although the experiment was designed for days, so any offer involving duration or rescue deserves careful attention.

  • Distinguish a promise from a fact. The Director leads Andrey deeper while promising answers, which makes the trustworthiness of the final proposal part of the story.

  • Read the Cat’s explanations. The Cat helps Andrey understand the rules of the place, and those explanations may clarify what the decision can and cannot accomplish.

  • Avoid using combat as a shortcut. The official description states that the Guardian cannot simply be shot, so any encounter should be approached as a designed obstacle rather than assumed to yield to firearms.

Replay plan for the second ending

Replay objectiveRoute adjustmentVerification
See the other conclusionReach the same final scene and select the alternative responseConfirm the opposite ending achievement
Improve story comprehensionReuse the same major location sequence with more careful readingNote how the final offer is framed
Confirm optional interactionsExplore the documented locations without assuming they unlock endingsRecord which achievements appear
Avoid an accidental missDo not rush the final dialogueCheck that the expected ending notification appears

A second playthrough does not require a radically different build, because official material does not describe character builds, skill trees, perks, crafting, or equipment upgrades. The relevant change is the final selection. If you want the other outcome, reach the ending scene again and choose differently.

What ASPIS 100 Percent Actually Includes

The term ASPIS 100 percent can mean different things in a story-driven game with twelve official achievements, so it should not be treated as a single mechanically defined mode. The official Steam achievement list includes story progress, exploration actions, character-related events, and the two ending achievements. Completing every listed achievement represents a full achievement set, but it does not mean there are no other player-created completion goals such as seeing every dialogue variation.

Completion goalWhat is officially documentedWhat is not documented
All achievementsTwelve achievements appear on the official Steam listCompletion percentages
Both endings“Let Go” and “World on Fire” are separate achievementsExact dialogue required for each
Story progressionAchievements cover the prologue and later story eventsA formal chapter count
ExplorationSeveral achievements concern unusual objects or locationsA complete collectible count
CombatSome achievements relate to encounters and actionsDamage, health, or ammunition values

For a complete checklist, the dedicated guide to all ASPIS achievements separates the official objectives from optional personal goals. The critical point for this topic is that the final choice should be treated as its own objective. Even a run that unlocks every other achievement still needs the opposite ending to complete the official list.

Treat the ending as a separate run

The cleanest approach is to prioritize the ending you missed. Once you know whether the previous run produced “Let Go” or “World on Fire,” use the route planner to identify the corresponding response and confirm the other achievement. This avoids unnecessary hunting for unrelated objects and makes the second ending a deliberate goal rather than an accidental discovery.

If you are pursuing ASPIS 100 percent completion, record each achievement as it unlocks. That helps distinguish story progression from optional actions and prevents the final decision from being overlooked until the very end. It also gives you a clear reason to replay if one objective was tied to a different route, an unusual interaction, or the unused conclusion.

Frequently Asked Questions

Can you change the ASPIS final choice after confirming it?

The official material describes one final choice leading to two endings, and separate achievements for “Let Go” and “World on Fire.” It does not document a post-confirmation reversal. Treat the selection as final, then replay the ending sequence if you want the other conclusion.

What does the ASPIS 100 percent goal require?

The full ASPIS achievement set comprises twelve listed entries, including story-progress milestones, unusual interactions, exploration objectives, and separate achievements for the “Let Go” and “World on Fire” endings. Because official sources do not publish a complete checklist breakdown or an exact completion percentage, treat those twelve achievements as the authoritative reference rather than relying on an unofficial percentage.

Does the ASPIS last level have combat or puzzle requirements for an ending?

Official material does not identify a combat, collectible, or puzzle requirement for either ending. The final branch is described as one narrative choice, while the Makarov pistol, melee combat, PEP-01, and the Guardian belong to the broader gameplay experience.

Which ending comes from accepting the deal in ASPIS?

Official information does not publish the exact dialogue pairing, so it is safest not to claim that one menu option always means a specific result. The achievement names strongly associate “Let Go” with release and “World on Fire” with rupture, but the final scene provides the definitive context.

Do I need every collectible to see both ASPIS endings?

No official source says collectibles unlock the alternate ending. The clearest route to both ASPIS conclusions is to finish the story, reach the last level’s final-choice prompt, and complete one narrative branch without interrupting the ending sequence. After the result appears, check whether the “Let Go” or “World on Fire” achievement registers, then replay from a pre-final save or restart the ending sequence and choose the opposite response.