Overkill :

GO CROSS-PLATFORM: Have Apple players for breakfast! Take part in the fight and represent your platform!

The Novice Tier offers battles featuring slower-paced enemies who take fewer shots before dying. You are issued a standard UMP 45 submachine gun with unlimited ammunition.

More skilled players can upgrade to the Elite Tier, featuring enemies who are faster and harder to kill. Elite players compete using M16A4 SPECOPS rifles that can be upgraded to include additional stocks, magazines, scopes, foregrips and other accessories.
The Elite Tier includes leaderboards, flying drones, bonus boxes and other features not found in the Novice Tier.

Over 120 combinations of weapons! Fight through 100 waves and 5 extra Hell waves in 5 locations.