okay, new feedback: it worked for a fair bit, me getting the shoot and the jump ability. guess next step would be to kill the enemy in the room with the jump upgrade but he wouldnt die.
in this iteration so far the enter key really only teleported me when next to the door.
however after now gameplay wise being a bit stuck and going back and forth between rooms, suddenly the quarter room wide enter glitch is up again, just need to be in the quarter to enter a door.
going back and forth between a few doors, suddenly I'm in a new room but my character is just gone.
at least i cant see him anymore!
yet when i press enter I (incorrectly) still can enter quarter wise doors, so the character sprite probably isnt drawn anymore.
but yeah, door entering thing again and sprite invisible makes it kind of impossible again.
but as said, at least in this run I started in the right spot and it worked for a while as intended.
but something, I dont know what, suddenly changed when the quarterwide door entering was up agai and from there, stuff jsut broke.
so I dont k now, something in the code must trigger this general behaviour where the game starts to deviate from how it should work.
Also, after so much complayning, let me say that the game itself looks pretty much and from a platformer/metroidvania perspective quite nice.
would enjoy it if my runs wouldnt be more or less ruined by the game basically breaking for some unknown reason in between :-)