So something to keep in mind, because the game's height exceeds my screen's height I can't properly play the entire view of the game and there should be a fullscreen option in itch.
Anyways, just played some of the game I couldn't get through the entire thing because voting is about to expire but I love the overall gameplay, art and feel despite my lack of time.
The player can climb, jump, jump on walls, shoot and deals with various enemies (I've only encountered the shooting enemy and the "Goomba" like enemy from Super Mario.
This game reminds me a lot of the original Super Mario Bros for NES, due to various level designs and this is a platformer game like that game.