X-Com Enforcer Description:

Alien forces have invaded Earth and are terrorizing the population. To combat this sinister threat, a lone XCOM scientist has created the Enforcer, a high-tech fighting machine made of earthly robotics and scavenged alien technology. Armed with the latest high-powered weapons, the Enforcer is teleported to hot spots to fight in adrenaline-charged battles that rage on city streets, across rooftops, and in the sewers. You are the Enforcer! Powered by the same game engine as Unreal Tournament for stunning visual effects, XCOM Enforcer puts you on the front line of an alien attack.