Endacopia All Bosses Guide: Battle Order, Secrets & No-Damage Tips

Short answer

Endacopia features five core boss encounters across Chapters I through III: Henry (House), Trapezist (Misery Town), Chameleon (Timesville), the Mainframe AI (Office), and Clocky (Epilogue rematch). Every boss beyond Henry features two mutually exclusive resolution paths: a combat defeat yielding a fatal achievement, or an environmental puzzle/dialogue method yielding a pacifist achievement.

When to do it: Encountered sequentially throughout Chapter I and the Chapter III epilogue. Always create a manual save backup before entering each boss arena.

What you need: Mallet for Henry, scalpel for Trapezist spare, water glass for AI spare, and correct dialogue clues for Chameleon spare.

Missable or risky: Yes. Resolving a boss commits your route forward; reload an external save backup to claim the opposing achievement.

Complete boss encounter order, resolution branches, and achievements

Plan your backup saves before each encounter to secure both Steam achievements without replaying the entire story.

Spoiler-free route

Every major boss fight can be completely avoided if you inspect the environment and bring key quest items.

Blocking consumes stamina; time your guard precisely when the enemy's attack animation reaches its peak frame.

Confirmed details

No-damage boss runs require zero guard breaks and zero chip damage during the brawl phase.

Henry cannot be reasoned with; he must be struck in the mouth during his open-jaw recovery frames.

The Trapezist rope cut requires the scalpel obtained from the clown surgery operation minigame.

This page separates documented requirements from route advice. Names, achievement conditions, platform details, and item counts are checked against the linked Steam records; navigation is cross-checked against recorded gameplay. If an update changes a room, prompt, or trigger, use the verification note below before assuming the save is broken.

Step-by-step solution

Step 1 — Henry: Keep distance, wait for the lunge, block on impact, and strike his uvula with the heavy mallet.

Step 2 — Trapezist: If fighting, block aerial swoops and punish landing; if sparing, interact with the left rigging rope using the scalpel.

Step 3 — Chameleon: Watch for ripple effects in the background. Either counter his tongue strikes or present your detective evidence.

Step 4 — Office AI: Either destroy the cooling conduits under pressure or splash the power terminal with fresh water.

Step 5 — Clocky Rematch: Return to Mellow's room in Chapter III, defend against time dials, and guide Mellow through the opened window.

Common failures and softlock risks

Guard flicker bug: rapidly tapping block can cause Mellow's guard to drop. Hold block steadily until the hit connects.

Save your game before cutting the Trapezist rope; doing so without collecting circus secrets locks the area exit.

Recovery rule: stop before crossing another chapter boundary. Confirm the current objective, cycle every usable inventory item, and retry the interaction from a clean room entry. If the trigger still fails, close the game before restoring a known-good save; copying or replacing live save files while the game is open can overwrite the recovery state.

Version and verification

Verified against the viral 350K-view No Damage boss run compilation and confirmed across Steam achievement unlocking conditions on the launch PC build.

Last verified: July 31, 2026, against the launch PC build, Steam achievement records, linked Steam Community guides, and recorded full-game footage. Endacopia can vary some puzzle clues between runs, so follow the clue in your own save when this page explains a method instead of a fixed answer.