Not your standard first person shooter game, Doom Resurrection for the iPhone has players following a pre-determined path; while shooting “uses an accelerometer controlled reticule that is used to target the enemies.” Video after the break.

The game includes 4 levels of difficulty from Recruit to Nightmare. Your performance in each of the eight levels is graded on an A-F scale based on your headshots, time, and item pickups and secrets found.

[via TouchArcade]