Fun start! It has a cool feel to it and fun themes. I wish the small enemies didn't spawn at the start of the boss wave so I could see the boss and feel more like im in a boss fight opposed to running away from enemies trying to hit the boss as a secondary thing. Maybe the small enemies could only spawn near the end of some boss fights and of an enemy type the same as the boss e.g. First boss be chicken minions and so on.
I got bored using the guns with a reload and felt very underpowered with them, it also took me to round 2 to realize what to do with the parts dropped by monsters.
I didn't get to try level 3 as the game crashed at the end of the first round :)