Hi! Thank you!
1) As far as I know, only SMD gamepad with 3 buttons. For emulator you can use some mapper app to map gamepad buttons to keyboard buttons.
2) Yes, that's the way it was designed.
3) It seemed to you:)
thanks for replying😄 regarding #3, I swear to God I can reproduce it, I’ll try and record a video of it😂 awesome game btw