How do i unlock the fight? I have done every level on the level select and gone through every marked 'alternative stage exit'.

EDIT (July 5, 2024) Managed to get the game going using protontricks & installing required dependencies pointed out by the developer in this post. Currently I got the game to run but it doesn't run very well, stuttering every time you do something. Trying to figure that out now, might make a guide later when I do! Shoutout to the dev for being open to answer questions. --- Just a quick heads up to Linux players looking to get this during the Summer Sale - the game does not wo...

如题，每次启动就只会闪一下游戏窗口，然后就没了，每个启动项都试过了，都没用。 救命

i just got every single other achievment, and if the dev read that, i love ur game and hello for brazil !

I didn't see the store page or any discussions here mention if this game was official or not.