Game Jam submission for 'One game a Month #29'

Shoot the enemies. Every kill gives you an extra bullet.

Every four times that you shoot, you sacrifice 20% of your bullets and you can pick a reward.

The balance isnt good. Some upgrades are better than others.

 I have not been able to dial in to 'challenging'.
When I tinker with the numbers it keeps flipflopping between too easy and unwinnable. Currently it's on the 'too easy' side, but that's more enjoyable than 'unwinnable'.

There is no audio, I just realized I forgot to include any and there's only 30 min left.