so’s yer mum
She used to be… She gave birth.
meet the pyro- somehow ignite 10 players in deathmatch
meet the sniper- kill 7 enemies in deathmatch with the crossbow zoomed in without dying
meet the heavy- kill 5 enemies in deathmatch with the mp5 without dying
meet the demoman- kill an enemy with any combination of 8 satchel charges + tripmines in singleplayer or deathmatch
you are not welcome in my world- kill 1000 aliens
this is sparta!- cause an enemy ragdoll to fall down a pit
there can only be one- kill an enemy in deathmatch who chose the same model as you
no smoking- cause the source engine to generate 10000 smoke particles
whats that sandvich? kill them all good idea- carry a medkit into battle have it heal you than kill all enemies without taking any damage
Last Second - Die while the portal to Xen is open.
I think it would be cool if you’d be able to fight there, but then you would die and game over, no credits, so it won’t be.
We’ve had this discussion many times before. It’s not going to happen.
Mom Murderer: Kill the Gonarch in under 30 seconds.
Gee, I’m sure one like that hasn’t been suggested before.
I take time on murdering moms, does that not make me a mom murderer?
No it just makes you a dedicated one.
Clean up! Clean up! Every-body everywhere!: Gib every loving gibbable thing in the game. (c wut i did w/ da every body :B)
Win.
Cranial Fauna: Survive two direct hits from the Tentacle.
Harassin’ the Assassin: Survive all meetings with the Assassins without taking a single hit.
Fixed. 
Ah yes, good point. Damn me and trying to find a rhyme that works with Trauma. It still works… ish.
Who the fuck is this kid anyways?: Wait two years for someone to acknowledge your presence on the forums.
Who?
Floura fauna trauma llama? In pajamas? Yo mama! Where’s Obama? What happened to my comma? Piranhas. Word. 
Eric The Fong- Keep killing Eric Fong in multiplayer until he type “fuck”
Whack a Mole - Kill a xenian within 1 second of it teleporting into the world.