Here's an old post I made on the subject,
Seeing that an imp -unlike a zombie or shotgunner- has a melee attack and needs to absorb almost always the entire pellet spread of a the shotgun to die, I'd say it's not quite a "weakling". An imp fireball, as well as its melee attack, can do up to 24 HP of damage on an unarmored player, which means being cornered by a mob of them will result in the tearing you a new one quite quickly. Being cornered by zombies OTOH, is much harder, as they are easier to kill and tend to infight/kill each other much before they achieve that.
Imps are also quite important infighting players: they can often survive a direct hit from most other monsters, and thus retaliate, tying other mosnters up. Often, they can often defeat a Demon/Spectre in combat since their melee attack always connects.
There might be relatively useless/redundant monsters in Doom, but the Imp certainly ain't one of them.
And yeah, the Shotty is pretty much THE weapon for the game. If you only had a choice of ONE weapon to clear any random level, that would be it: it's safe to use, not too wasteful of ammo, damaging enough at close distances, still usable for sniping, and relatively quick to reload. With a cool animation. No wonder that Doomguy running through a level, killing stuff and reloading the shotty with his usual calm and aplomb, is THE iconic imagery for the game.
Ofc, if you can get away with exploding stuff, then a RL might work just as well....
Last edited by Maes on May 25 2014 at 00:31