Halo flood defense is a top down shooting game. Move Master Chief using the arrow keys and aim and fire with the mouse. Move over a weapon icon to pick it up. When you use up the ammunition of a weapon, you will switch back to the pistol. Survive as long as you can. There are currently 10 Available Achievements: Acheivements- Cheater Invincible Trigger Happy Surviver Ranks- Rookie Private Officer Sergeant Lieutenant General Try to unlock them all.
