The character looks so cute I feel sorry for exploding it. I liked the idea of this game!

In your game description you said that feedback is appreciated, so if you don't mind I point a few things.

The perks farming feels very slow, I think it would be better to either (1) make perk crystals placement more dense or (2) lower the cost of the upgrades.

Some small UI polishing. In browser main menu doesn't expand to the whole game window and leaves part of the screen gray (when I tried Win build it also has this problem when resizing the screen). Also sometimes I had blinking black screen on top of the map (I think when 1 minute counter reached 0).

Otherwise very good entry and you're moving in the right direction!