Survive increasingly difficult waves of zombies (including boss variants)Switch between up to 5 weapons (pistol, rifle, SMG, sniper, shotgun) each with unique stats, recoil, and spray patternsAim with the mouse in a raycast-based shooting system with piercing, tracers, decals, and brass ejectionTrack performance via kill count, shots fired, and accuracyWin by clearing all waves, with a final score screen on win or lose