Definitely agree with some of the other comments. I think it takes a little too long to start up- I initially thought that the tutorial was just the main game before getting past it! I would also like to suggest things like coins being an automatic pick up if you walk over it, since it feels a little strange to have to hit E just once compared to the other objects.
I like the concept though! I think the upgrades are a nice touch that gives the game that fun bit of progression that makes you want to keep playing! The sprite animations look quite nice as well.