Field Medic
Heal 25 survivors using First Aid
This a gradual achivevements. Playing enough games should get it but one way is to go into Single Player and shoot your teammates and restart the campaign and repeat.
Rank: Rare
Cr0wned
Kill a Witch with a single headshot.
This one is a little tricky. Keep a the Pump Action shotgun handy and when you hear one search the area. When you find it go behind her and try your best to blow her head clean off.
Rank: Rare
Unbreakable
Finish a campaign without being healed
This one is a pain in the ASS! Do it on Crash Course at easy difficulty. When the Tank is near let your teammates take care of it. Near the finale always get in the corner while your friends cover you. If you get knocked down before the finale just restart the campaign as there is NO way you will be able to make it.
Rank: Epic
Tank Stumble
Stumble a tank with a explosion in the Crash Course campaign
I wouldn't try this with a Pipe Bomb as they tend to bounce around. Keep a Propane Tank handy. Drop it when you have to shoot but don't blow it up because they are some what rare in Crash Course.
Rank: Epic
Safety First
Finish a campaign with no survivors taking freindly fire damage
Simple as this, don't shot unless needed. Do Crash Course on easy to get through it fast and without alot a damage done to you.
Rank: Legendary
Slippery Pull
Smoker pull a bile-covered Survivor until you hold him during Crash Course.
Get some freinds to join play with you and other people who agree to help. Wait for a player to be a Boomer and another to be a Smoker and then do it and then you should get it.
Rank: Legendary
Robbed Zombie
Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.
This easy if you can stand to play Dead Center alot. The CEDA Agents have a low tendency to spawn with the Bile Jar attched. They also only appear in part 1 and 2 which makes it even harder.
Rank: Epic
Mutant Overload
Play 6 Mutations
If you have been playing all the mutations every week up until this point you should get this. You don't even have play through it, you can just start it up and then quit and it should count towards this.
Rank: Legendary
More to be updated soon