in order to skip wasting too much time collecting the rats in the sewer, use this, collect all rats in the sewer, make a fresh save file, then start a 100% run.

with collecting all rats, then making a new save file afterwords, you can skip collecting them in an actual speedrun, something about collecting them all is bugged in a fresh save file IF YOU DO NOT TURN OFF THE GAME. if you turn off the game and then try, you will need to re-collect all rats before going on a real run.

in order to use this save file, disable cloud saving with steam, and go to C:\Users\USERNAMEHEREREPLACETHIS\AppData\LocalLow\Bromio\PatoBoxTheGameSave and paste it here, replacing whats already here.