I was trying to figure out what looked weird about this, then I realised they made the new gun sprite off-centre.
Especially strange-looking to me because I play DOOM '16 with the gun in the centre, as you god damn should.
Carmack is somewhere getting Doom running on a digital pregnancy test display
Oh shit, it's DAT DOOM. PLAY UP?
I know it's going to be an unpopular opinion but: This looks more than the game it's demaking. The tutorial area that they demo'd just was kinda boring and the gunplay was kinda boring in Doom 4. This demake throws a bunch of monsters at you in this opening/tutorial level and while it might be slightly hectic, it also makes it fun. I dunno, there's something lost in translation that Doom 3-4 lost that Doom 1-2 have in their "magic."
That's not Doom 2.
Edit: At a glance it looks like Doom64 EX, though I'm not really sure.
I don't remember being able to jump or climb ledges in Doom 2...