A bunch of Aztec warriors rushing you and you mopping the floor with them. It would be easy, but it would be realistic. One shot with a rifle and they'd be running for the hills.
Actually, I think it's a failed game. It has two good things: the engine, and the fights. The rest is just average and the frantic action just doesn't fit with the horror (which is poorly executed, by the way).
I finished F.E.A.R. in a rush (the owner wanted it back), and got some nice pictures. To show the power of my budget rig.
The first one is a spoiler, by the way.