Pretty fun overall. The art style is cute and feels consistent.
Some thoughts:
- I agree with what others have said about the fall damage. Seems strange especially to have 2 instant death pits at the start of the game.
- The SFX could use some work. I'm guessing these will be overhauled if you continue with this project.
- I couldn't get the climber gloves to work. I seemed to grab onto every surface even when I didn't want to and it made the platforming clunkier.
Nice job.