In case you guys didn't notice already, but I added per-map Achievements. They can only be achieved once per map, so it's definitely something to shoot for! Here is the current list of achievements to get:

Survivor Achievements:
Killing Machine - Kill 100 Common Infected
Killing Massacre - Kill 175 Common Infected
Killing Manaic - Kill 250 Common Infected
Killing Monster Mash - Kill 325 Common Infected
SI Murderer - Kill 30 Special Infected
Not So Special - Kill 45 Special Infected
A Special Kind Of Killer - Kill 70 Special Infected
The Special Infected Assassin - Kill 100 Special Infected
Group Healer - Heal 5 teammates
Field Medic - Heal 10 teammates
A Helping Hand - Revive 8 teammates
Guardian Angel - Revive 15 teammates
Got Your Back - Protect teammates 10 times
Personal Bodyguard - Protect teammates 20 times
Get Your Motor Runnin' - Pour in 7 Gas Cans
Getting A Head - Headshot 10 Special Infected
Just Following The Rules - Headshot 20 Special Infected
Holy Reviver - Defib 3 teammates
Target Practice - Get 10 longshot kills
Untouchable - Don't take damage for 3 minutes after you leave the saferoom
Can't Touch This - Don't take damage for 6 minutes after you leave the saferoom
Santa's Little Zombies - Collect 7 gifts dropped from Special Infected
Cry Me A River - Kill 5 Witches in a single round
You Shall Not Pass - Level 3 Chargers
Stop Stealing My Kills - Get 10 points from assists
Showstopper- Shoot 6 Special Infected while they are mid-air

Infected Achievements:
What A Downer - Incap 7 survivors
How Does That Floor Taste - Incap 13 survivors
Murderizer - Kill 3 survivors
Survive This...Oh Wait A Sec - Kill 6 survivors
Bulldozer - Run into 10 survivors as a Charger
Stomach Acid - Boom on 15 survivors
I Think I'm Gonna Be Sick - Boom on 30 Survivors
Hang Em' High - Pull 8 survivors
Hooded Ninja - Pounce 8 survivors
Giddyup - Jockey 8 survivors
Running Back - Charge 8 survivors
Sky Diver - Get a damage pounce of 20 or higher 3 times
Who Needs A Parachute - Get a damage pounce of 20 or higher 6 times
Admin Is A Deadmin - Kill an server admin when they're a survivor (can be obtained multiple times)
I Could Take A Bath In This Stuff (lol portal) - Earn 25 points of damage from spit
Rock-eteer - Hit 5 survivors with rocks
We Will Rock You Like A Hurricane - Hit 10 survivors with rocks
Going For A Joyride - Jockey a Survivor for 10 seconds or more
Reeling Them In - As a Smoker, pull someone from really far away (has to be pretty much at maximum range)
Stop Doing That - Interrupt a Survivor healing another player 5 times
Group Shower - Boom 5 or more Survivors 3 times. Note: This is not within a life, it's when the "Boomed x Survivors" message appears
Falling From Grace - Inflict lethal fall damage to Survivors 3 times
Little Help From My Little Friends - Get 5 or more points from common assist points as a Boomer

Total Achievements: 49 - 26 Survivors; 23 Infected

This list will be ever-changing (as I add more to the plugin), so it's something to keep an eye out for when you get one!