Bullet That Can Kill the Past Guide

The 과거를 제거할 수 있는 총탄 is a passive item assembled from four components spread across four floors of Enter the Gungeon. Once built by the 대장장이 in the 대장간, it allows any Gungeoneer to enter and confront their past. It can be obtained from the 대장장이 an unlimited number of times after it has been built once.

The sections below follow the order how to forge it → where each of the four pieces is → how to use it → things to watch out for. The four pieces are independent and progress is permanent, so there is no need to gather them all in a single run.

How to build the Bullet

Collect all four components across separate floors and bring each one to the 대장장이 in the 대장간. The components do not need to be delivered in a single run — each one you hand in is remembered permanently.

Components

최고급 뇌관

최고급 뇌관 — Found in 총굴 본관. Purchase it for 110 탄피 from 상인 – 벨로's shop.

• Discount items do not reduce its price.
• It is locked in a glass display case and cannot be stolen with the 닻 모양 갈퀴.

신비로운 화약

신비로운 화약 — Found in 화약 탄광. A large empty-looking room contains invisible minecart rails over a chasm. Ride the minecarts and dodge-roll between them to cross.

• The 신비로운 화약 is the only active item among the four components — consider using the 파일럿 (character differences: see All Characters Guide: Starting Loadouts & Traits), who carries an extra active slot, when transporting it to the 대장간.
• If you have a flight item such as 왁스 날개, you can simply fly over the chasm.
• You can slow down a minecart and stop it beside the next one to make jumping across easier.
• Falling into a pit in this room resets the entire room, deleting any dropped items.

평평한 납 조각

평평한 납 조각 — Found in Hollow. A room with a chasm hides an invisible path to the item.

• Shoot and reload to drop shells — they land on invisible solid ground and mark safe tiles. Starting guns work especially well since they eject shells backwards.
• Guns that leave liquid or debris on the ground, such as 화석 총 or 메가 도저, will reveal the path.
• With 구덩이 군주의 부적, trial and error is a viable method since there is no penalty for falling off the path.
• Any flight item (왁스 날개, 제트팩, 풍선건, 에테르 형태의 반지, 고양이 총탄 킹 왕좌) lets you cross the chasm without needing the path at all.
• The 닻 모양 갈퀴 or 방향 패드 can be used to cross the chasm or snag the item itself.
• 피묻은 목도리 can also cross the chasm — hold down roll while standing at the very edge of the ledge to charge a blink to the other side.
• If you fall off the path, it will be randomly regenerated.

흑요석 탄피

흑요석 탄피 — Defeat the 드래건, then destroy its skull to reveal the casing.

• This is the only component that cannot be stolen by the 쥐갈공명.
• It can also be re-acquired after giving it to the 대장장이, making it the only component obtainable more than once.

Using the Bullet

Once you have the 과거를 제거할 수 있는 총탄 in your inventory, the Gun That Can Kill The Past appears at the end of a floor. Shooting yourself with it lets you enter your Gungeoneer's past. The Bullet cannot be dropped.

You must have the Bullet before entering the 방향 없는 공동 — it is not possible to retrieve it once you cross that threshold.

Notes

• Carrying the Bullet is not required to access Bullet Hell or fight the 리치.
• The 쥐갈공명 can steal the Bullet. With 쥐갈공명의 반지, it can be traded for an S-tier passive item.
• Using the Gun That Can Kill The Past without the Bullet will still let you shoot yourself and reach the credits screen — but the run ends there instead of entering your past.
• Having 복제인간 when you die and possess the Bullet has no additional effect.
• All rooms guaranteed to spawn because of a component will no longer appear after that component has been turned in.
• 스파이스 can replace the 최고급 뇌관 in the shop if enough 스파이스 has been used.
• If your co-op partner dies during the 드래건 fight, they lose the Bullet upon revival — but they can still fire the Gun That Can Kill The Past at themselves to enter the past.