Bullethead

Bullethead is an arcade skill game where you shoot down alien invaders to save humanity from extinction! Revive fallen comrades to build a thriving army to fight for your cause. You will blast each extraterrestrial menace with neon-green, deadly globules. Collect Rapid Fire and Triple Shot bonuses to win with ease! Move around, jump and shoot your way through victory ! There is also a two players mode.
How to play:
Player 1 :
Shoot with M
Jump with N
Move horizontally with the arrow keys
Hold down arrow key to donate a life to the other player
Player 2 :
Shoot with G
Jump with H
Move horizontally with A adn D
Hold S to donate a life to the other player
About the creator:
Bullethead was created by Nitrome as a flash game, and later emulated in HTML5 by AwayFL for Poki. Play Nitrome's other flash games on Poki: Test Subject Blue