The most advanced energy source on Earth has gone missing. The problem? It's not actually from Earth! Join the elite Overstrike 9 squad and hunt down an alien technology with devastating potential. The Fuse energy source can transform any substance on Earth into something much more potent...and much more dangerous. Each member of your team possesses a unique skill: brute force, stealth, healing, and sniper. Coordinate tactical strikes with ultra-high-tech Fuse-powered weapons in a rich co-op story built for up to four players. Upgrade and combine weapons for even more massive attacks, and use the LEAP feature to instantly switch between team members during battle.