Actually you still have colored keycard sections in Doom , just not in every single map. Also , in certain parts of Hell you need coloured Skulls , like in the original Doom games. What i meant with the story is that they try a narrative but everyone already makes an educated guess of what's happening after the first few levels in. They had ("have" if they plan on making a sequel) something that might turn out interesting with Doom Slayer characterization/origin besides the whole "he just wants to kill demons" thing. I agree , the fast movement is a great action picker , especially with rune upgrades that increase movement after glory kills , just non-stop rip and tear, and thats what Doom should always be about.