i really enjoyed the game, the idea is soo cool. well done!
the art is amazing, i'm a big fan of this kind of pixel art.
the only advice i can give to you is to highlight the hitbox of the item that you posses, to make simpler and more immediate if you clicked it or not, because in the situation where i had little time to click and make the man jump i kept dying because i didnt really hit the object with left click.