Arrow keys : move.
Space bar : Shoot(hold down for continuous fire).
Z : Release bomb(tap z again to detonate) .
This game is a simplified recreation of one my favorite horizontal shooters, Ultimate Ecology, a Japanese arcade game for CPS-2.
The wheel arm is most effective.
The red laser does the most damage against you.
The circle of turtles can not be destroyed, you must dodge them.
Stay wide of this boss, it's movements are hard to predict.
The hammer arm is most effective.
Don't get frustrated.