Hm,
I tried the game without picking up the locker key but still get the second ending (Except that the guy was standing in front of the cupboard, instead of inside it :D).
But I have to kill Risadinha to get the fuse, right? Or am I mistaken?
What I think happens is that it’s because if you used gasoline to kill Risadinha before going to Alexandre’s trailer to disable the gate locks, the game saves Risadinha as dead, and when it saves the locker guy before that, it also saves him as rescued. Unfortunately, it ended up like this so it wouldn’t break the continuity between acts if the player dies after opening the gates on the PC. If you did it in that order, you’d have to start a new game to get Ending 1.
To get Ending 1, neither of these two things can be done.
I identified an issue that could break the game. To make things easier so you don’t have to restart anymore, I removed the checkpoint from that last section, and now it will start from the previous one. The path to the ending will be a bit longer, but there will no longer be a chance for this bug to block Ending 1. You can continue with your current save, and it should now work.
I’ve just uploaded this version, and it’s now available to download.
Sorry about that.