Only a fool would deny Doom 2's influence on video gaming.
The game was indeed mind blowing. The creepy environment, the MIDI based signature Doom music and the hordes of monsters I killed for the first time took me by surprise. My earlier experience with Castle Wolfenstein dealt with killing the Nazis, and this game was a big leap forward.
The levels of this game was designed on a linear premise, you start from one point, kill the monsters, solve the exit puzzle and move into the next level. Each level has increasingly tougher enemies and harder puzzles. I can't exactly say how many nights I spent awake killing these alien monsters--but it extended for months. At one point, I had to start cheating as I could not cope up with the difficulty level. That was, in fact, the first time that I learnt that you can cheat a PC game. Considering that the game was developed in 1994, I must say that they did wonderful with the graphic works. But the lack of voice contributed to the lack of personality of the hero.
Overall, Doom 2 is an all time classic. Action gamers must experience this-- even for the heck of it.