✓ Both are tactical first-person shooters — sharing shooter, first-person shooting and melee combat
≠ Where it differs: brings dark, oppressive atmosphere, strong narrative focus and horror setting, while skipping deep RPG systems
Wall-running and thrust jumps make it the most mobile campaign in the series, and the four-player co-op campaign is a genuine structural change. Zombies is at its most elaborate here. The story is close to incomprehensible, the campaign is the weakest part of the package, and the PC version's supply-drop economy drew heavy criticism.
It predates Payday 3 by 13 years, with what that implies technically.