0-1: Weapon
Collect the named weapon pickup in the level to send its check.

COMMUNITY INTEGRATION
Rebuild V1's arsenal from other worlds. Secrets, optional challenges and ranks reward the multiworld while received weapons and movement abilities open new routes.
Maintained by TRPG0
Browse possible checks, rewards and settings. What appears in your game depends on your World options.
ULTRAKILL 3.5.6 defines 284 check candidates; default settings create 140 baseline locations, while challenges, Perfect Ranks, secret exits, enemy rewards and side activities are option-controlled. The defaults start at 0-1, target 8-4 after 15 level completions, and skip 0-E, 1-E, P-1 and P-2; skipped-level and goal-level locations are automatically excluded from item placement. The APWorld requires Archipelago 0.6.7, and its 12 Python modules match the tagged source archive after CRLF-to-LF normalization. These mechanics come from the exact release assets and tagged source; no seed generation or game session was run.
Actions and milestones that can send a check to your multiworld.
Collect the named weapon pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Complete this level's optional challenge to send its check.
Earn a Perfect Rank in this level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Complete this level's optional challenge to send its check.
Earn a Perfect Rank in this level to send its check.
Use this level's secret exit to send its check.
Collect the named weapon pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
Find this hidden pickup in the level to send its check.
An individual ULTRAKILL run connected to a multiworld. Native shared-game co-op is not part of the reviewed installation.