The DOOM games of the 1990s didn't mess around when it came to introducing the game. There was no lengthy cut scene, no NPC drawling on and on about a backstory, and no brow-beating tutorial that took you away from the ensuing action.
Fast-paced yet incredibly smooth first-person shooter gameplay; challenging difficulties even at the lowest setting; and it captures that old-school familiarity of the original DOOM games blissfully well
SnapMap and multiplayer both need some polishing before they are suitable for constant mass consumption and some of the platforming elements seem a bit overkill for this type of game