Not much to say here, it's Doom. I have to admit that I'm not very good at it, oftentimes I just like to switch on god mode and all weapons and just zone out, which is made fun simply by the labyrinthine level design and the rhythm of the gunplay itself. God mode in COD for example wouldn't be nearly as interesting, the focus there is on a Michael Bay-esque overwhelming of the senses, wherein the popping in and out of cover amidst a hail of gunfire provides the central tension and rhythm; remove that tension and you have nothing. Doom's is based on movement and the haunted house-style enemy placement and level design which facilitates a need for the player to maintain 360 degree awareness, thus greater attention is paid by the player to the environment itself, item placement, etc. Just very engrossing, all things considered. Oftentimes though I'd switch on God Mode because the game reeks of artificial difficulty by way of just throwing waves of enemies at you when you're low on ammo and health, thus incentivizing save scumming and after a while the gameplay does begin to feel a bit repetitive. I'm ultimately more interested in playing Doom 2 which based on people on here's reactions is the superior game all in all.