It definetely is Doom (1993).
Yeah this rocks even 30 years later, it's amazing how well they nailed everything at ID almost on the first go while basically inventing one of my favorite genres of gaming (sorry to the 3 people that like Wolf3D, you can paypal your hard earned money if you really want me to play it because I feel nothing towards that game and have no desire to replay it. I guarantee no playthrough tho, I just want to get Soldier of Fortune on GoG). Really, gramgram hasn't aged a bit in those three decades and I was surprised to find out how short it really is, about 4 hours on ultra-violence while doing little secret hunting. Yeah I'm one of those that doesn't really care for secrets, high scores never really got to me as a kid so I was never much of a completionist.

Please, play this thing, it's really as good as that one friend you have that you know it's a freak because they always have some knowledge on whatever you're talking about with them says.

On to Sigil