Congratulations on your first Game Jam!
The gameplay was fun. For some reason the look and feel of the game made me think about the old Atari game Adventure (gave me that feeling when using the door to move to room 2).
I think it would have felt more natural to use 'spacebar' for jump. Also when spawning, some invisible force always pushed me backwards to the lower-left corner of the screen.
I thought the ability to use your corpses as stepping stone in the acid was very clever!
Nice submission.