Overall, super cool. That was fun to play. But there is a major late game problem, which is, that quick purple slimes push other slimes, which block their way. That leads to kind of an instant kill in the end, which is super sad. Also: The idea of providing upgrades at random is kinda nice. Although I do not have the feeling, that I really can manipulate the game state.
And what is the blue icon actually supposed to be? Is it armor? Attack speed? I drew this 7 times and did not feel any impact of that upgrade onto the game state.