Tools such as the , an open-source project on GitHub, provide a user-friendly interface for modifying these files. However, please be aware that such tools are often in an alpha state. Always back up your saves before experimenting, as bugs can lead to file corruption.
Right-click in Steam -> Manage -> Browse local files .
Copy the entire folder and any folders named Slot1 , Slot2 , or Slot3 to a safe location on your desktop. This is your backup. Step 2: Disable Steam Cloud Sync temporarily
| Source | Reliability | |--------|-------------| | Speedrun.com > ULTRAKILL > Resources | High | | Official ULTRAKILL Discord (#resources or #save-sharing) | High | | Nexus Mods (ULTRAKILL section) | Medium (check comments) | | Random YouTube videos | Low (likely outdated or unsafe) | ultrakill 100 save file
Delete the existing SaveFile.ini in your %localappdata%\ULTRAKILL folder. Drag and drop the downloaded 100% file into this folder. to exactly SaveFile.ini (case sensitive on some systems).
| Pros | Cons | |------|------| | Instant access to all weapons for sandbox fun | Removes sense of progression | | Practice P-ranks on any level immediately | May cause confusion for new players | | Unlock hidden Prime Sanctums without secrets | Some achievements may not trigger retroactively | | No need to grind Cyber Grind for weapon unlocks | Potential version mismatch (game updates may break save) |
Verify that the save slot shows 100% completion, all P-Ranks, and Prime levels unlocked. Tools such as the , an open-source project
Every hidden level unlocked, from the survival-horror layout of 0-S to the puzzle-heavy 5-S.
Installing a downloaded save file is a straightforward process, but you must backup your original data first to avoid losing your personal progress. Step 1: Locate Your Save Folder
Go to the end of Act 1 or Act 2, enter the glowing blue Prime doors, and test your reflexes against Minos Prime and Sisyphus Prime. Right-click in Steam -> Manage -> Browse local files
If you download a save file created during an older version of the game (e.g., Act 1 era) and try to run it on the current build, it may cause glitches or missing weapon variants. Always look for saves labeled for the most recent layer updates.
Whether you choose to bleed for 100 hours to earn it, or you download a pre-made in less than five minutes, the destination is the same: standing at the terminal, watching the blood rain down, with every weapon and every secret at your fingertips.