(DA? I'd rather floss with barbed wire, to tell the truth.)
A'ight, well... you asked for it, then. Posted in roughly the same order as they were made. Should be work safe for the most part, but just to be on the safe side, /spoiler'd for your comfort.
First up, the "Sarge" class. Yelling at your team-mates to motivate them and kicking ten kinds of crap out of anything that gets too close, with bare hands if necessary.
You generally don't argue with people who shove imps' heads into monitors on a daily basis.
Scouts weave past enemies and make a run for whatever seems the best place at the moment. And firepower is all well and nice, but sometimes you just have to know when to run like hell.
Such as when you've used up all your ammo save one grenade on that demon and there's zombies closing in.
Medics, oddly enough, don't see much use in the game. I guess medkits just work better, even if their availability is somewhat... limited.
It could just be because the medbays where they keep the healing supplies are almost always crawling with zombies, though.
And you can never really tell if that corpse is an honest corpse, or a zombie just waiting to munch on you...
Some guys have skills. Others just get lucky and manage to get a hold on the BFG before anyone else.
But then, with something like that in your hands, you don't need much else in the way of skills.
One shot, one kill... oh, if only the demons really did go down that easy.
And you hardly ever see the distances where your marksmanship can really shine.
There's times for skulking about, and then there's times to just let loose with all the high-powered weapons at hand.
Now don't you wish you could use other weapons than just pistols in pairs?
"Some people think they can outsmart me... Maybe. Maybe. *snf* I've yet to meet one who can outsmart bullet."
Ahh, the gunner class. My favourite. An infinite supply of bullets, and all you need to be happy is a chaingun.
There's the marines who kick in the door and charge in, weapons blazing. Then there's the stalker, crawling through ventways, coming up behind enemies, and...
SNEAK ATTACK!
...now don't you wish you could do something like that to arch-viles?
Raptor. Chainsaw. 'Nuff said.