I died silly in a few places, but I'm satisfied since I was able to pull off the black deame mutation. the ship evolves as you get 'EVOL' power up. And de-evolves after a while if you don't get more. As you evolve, your fire power is increased, but your ship size is also increased which makes the game more challenging. On twin laser (Kues), de-evolve into twin missile (Zugau) then get 'EVO
![Darwin 4078](https://cdn-ak-scissors.b.st-hatena.com/image/square/a8a484f64bc874cc00859400949304029453b1b3/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2FEb-0K7kElOU%2Fhqdefault.jpg)