Story: 61 | Co-op: 7

Pay attention to the mission specific achievements so you don't have to replay levels later.
Keep in mind that the solo play and public/private play track completion progress separately, so you need to do all levels in either all solo mode or all private/public mode*. You should play in the public/private pool since you can make the game private and do levels solo anyway, but you can also switch to public and have randoms (hopefully) join you if you are stuck.

*As user "Euro on Ice" noted in comments, you do not need to complete all levels in ONLY solo or ONLY public/private. You may complete levels in either or, and it should count.

Sidenote: If you complete a level on Sniper Elite, and later complete it again on Cadet, the star completion for a level will show 1 star instead of 3, but it will still remember that you did it on Sniper Elite, so no need to replay it.

Complete all Horde mode related achievements. These can be pretty rough solo so either host a game or try to find someone to play with in Discussions.

Get everything else that you are missing: cumulative kills (fire demons), streak kills, mission specific, miscellaneous, co-op.

This should be the last thing you go for. After everything else is done you should have around 5,000, maybe 6,000 limbs shot. You will need a few more hours of grinding. There is a good spot to farm these that I outlined under Leave the limbs you've lost.

Complete all 15 levels on Sniper Elite difficulty. Set enemy setup for 1 player if playing with others to make it easier, if needed. You should be able to beat most levels solo if you are careful and take your time. Some levels (especially 5th level in each chapter) can be quite difficult. For these, you can host a public game and hope somebody will join (somebody will join eventually). Consider playing solo so you will have more zombies to yourself to work towards the final 10,000 limbs achievement.

I would suggest you use sniper "Lee-Enfield" Mk. III as it is one of the strongest for killing elites (takes 11 shots to the head) while also having the most bullets in a magazine (from the most damage category). You can find other weapon comparisons in this guide.

This calls for divine intervention!
Successfully complete all Chapters on Sniper Elite difficulty


Don't mention the Z word!
Successfully complete Village of the Dead


Resurrection Day
Successfully complete Cathedral of Resurrection


Play it Thule
Successfully complete Labyrinth of Death


The pen is mightier than the sidearm
Successfully complete Library of Evil


No more room in Hell
Successfully complete Subway to Hell


Hell on earth, that's it
Successfully complete Purgatory


Into the fire
Successfully complete Gateway to Hell


Descent into Hell
Successfully complete Crucible of Evil


This is going to be a bumpy ride
Successfully complete Terminal


Code Red
Successfully complete Tower of Hellfire


I think we'll start with a reign of terror
Successfully complete City of Ashes


You got rid of those stiffs yet?
Successfully complete Freight Train of Fear


There's something in the mist!
Successfully complete Forest of Corpses


Broadsword calling Danny Boy
Successfully complete The Keep


Taste some of Mama's home cookin', Adolf!
Successfully complete Army of Darkness



Video guide for all collectables. In the YouTube description you can find links to all videos separated per mission, if you prefer it that way.

They must be destroyed on sight!
Find and shoot every Bottle of Blood


Just in case we make it
Collect every Gold Bar

Leave the limbs you've lost
Sever 10,000 limbs


You should go for this after everything else is done. After campaign and horde is done you may have roughly around 5,000 limbs shot. Heads also count as limbs. Limbs blown off with explosions also count. Preacher is great at shooting off limbs. You can target arms and legs through your regular playthrough so you may have less to do at the end.

There is a good spot to farm these near the beginning of Episode 3: The Keep. Set the difficulty to Cadet and enemy setup for 4 players. Pick up the Preacher to the left of the castle, near the beginning. Shortly after, when you cross a bridge that breaks behind you, you will get a checkpoint. Here, summoners will spawn infinite enemies. A tip with the Preacher: round up a big group of enemies and shoot them from a greater distance. Use up your explosives, sniper ammo, and restart as needed (there is also an ammo crate at the end of the corridor). Video guide.

You can also farm many other achievements at this spot including most cumulative and streak ones.

Don't get all stingy with your bullets
Kill 5,000 enemies of any kind


It's just a flesh wound!
Sever 1,000 limbs


Headshots are the very best
Defeat 500 enemies with headshots


The head bone's connected to the...oh, wait
Kill 500 Skeletons


Naughty little boys get what they deserve
Kill 100 Zombie Snipers


If needed, at the same spot as 10,000 limbs farm.

Good, bad, I'm the guy with the gun
Kill 50 Super Elites


We don't need a stretcher. We need a mop!
Kill 50 Suicide Zombies


Headache relief
Kill 25 Summoners


If needed, at the same spot as 10,000 limbs farm.

Snuff them out
Kill 25 Fire Demons


I was about 15 demons short after regular playthrough. Good spot to farm them is in Episode 2: Tower Of Hellfire. Very close to the beginning of the mission, you will get a checkpoint when in solo play. Video guide.

We got this by the ass!
Reach a total shot distance of 50km


And stay down!
Kick 50 enemies down


Like a drunk who's lost a bet
Kill 20 enemies as they revive

Resurrect this!
Score 5,000 with a single sniper round


At the same spot as 10,000 limbs farm. Use the Preacher to build up a large combo, around 70x will be enough but you can easily get it to 100x. Then line up 2 heads with a sniper shot and you should get it. Shooting a barrel nearby a group of zombies with that high combo also worked for me.

Every bullet counts
Get a 5-for-1 kill with any sniper rifle


A very easy spot for this is at the start of Episode 2: Labyrinth of Death. Set enemy setup for 4 players and difficulty to Cadet. Simply lure all the enemies so they follow you in a line like in this video guide.

We all go a little mad sometimes
Get an unbroken 10-headshot streak


Come and get it! It's a running buffet!
Get at least 20 for 1 with an explosive kill


There will be plenty of opportunities to get this. You do need a dynamite, so set it so you start with 2. Set enemy setup for 4 players and Cadet difficulty. One of the good spots is at Episode 2: Labyrinth of Death, near the beginning when you have to open a huge metal door. A big horde of zombies will come out, just bait them a bit, group them up and shoot the dynamite.

My family's always been in meat
Get at least 15 for 1 with an explosive kill


Somebody's got to survive!
Get at least 10 for 1 with an explosive kill


You've got red on you
Reach a Chain Count of 30


Scourge of zombiekind
Reach a Chain Count of 20


I will not negotiate with the Undead!
Reach a Chain Count of 10

Man, you sure know a lot about monsters
Complete every Survivor sidequest


There are a total of 20 steps that are spread throughout Episode 3: City of Ashes, Freight Train of the Fear, and The Keep. Video guide.

You want me to salute that pile of..?
Kill an Occult General


You need to be the one landing the final blow. You will find them in the last mission of Episode 1 and 2. Not sure if the ones you meat in other missions count.

Nine tenths of the law
Become possessed


In Episode 2: Purgatory. At the very end, there is a interactive baby carriage right before the train station. Video guide.
Or Episode 3: City of Ashes when you get to the hospital and follow the quest, just before one of the doors, there will be baby cribs to the left labeled I - VII. Interact with I. Video guide.

Answer the Devil's call
Pick up a phone


In Episode 2: Crucible of Evil, at the very end when you get to the bunker, go downstairs and through the first door straight ahead is the phone. Video guide.
Or Episode 3: The Keep, when you get to the part to collect explosives, in one of the rooms to the right is the phone. Video guide.

We can still fix him
Save the man in the hospital


In Episode 3: City of Ashes when you get to the hospital. Will be obtained along with all sidequests achievement.

Merciful death
Put the tortured souls in the Forest out of their misery


In Episode 3: Forest of Corpses you have to shoot 11 dudes. The first one is just before you start the first encounter, to the right of the giant tree. The other 10 are suspended between trees later on. Video guide.

Don't worry, they're evil!
Shoot the 3 Zombie Ravens outside the Folterschloss


At the very beginning of Episode 3: The Keep before you cross the bridge that breaks, you will see them in the tower. Set difficulty to Cadet and use focus time. Video guide.

We have a Judas in our midst!
Kill a Survivor


Survivors are all over Episode 3. Easy one is at the very beginning of The Keep. In the first building to the left, there is a guy sitting on a chair.

Gratuitous violence from the lot of you
Complete levels as every playable character


You only need to finish a level with the first 8 characters. The L4D characters do not count.

Burning a hole in your pocket
Loot a Chainsaw Elite's corpse


These guys start showing up in Episode 3: Forest of Corpses. Not the first one, but the second one you meet will be right after a checkpoint. There will also be no zombies around to worry about. You must be fast at looting them as they despawn very fast. You can restart checkpoint if you fail.

Elite pickpocket
Loot a Super Elite's corpse


Your blood pressure is zero over zero
Headshot a Heavy Armour Zombie without removing his helmet


You will find a lot of these in Horde mode. It needs to be the one that is fully armored (no back of head exposed). You can get it by shooting at their eyes, or the exposed bottom of the head area on their side. You will get it eventually.

Give me something to shoot
Kill a Zombie Sniper in mid-air


Same spot as 10,000 limbs farm.

Got you, didn't I, you little sucker!
Kill a Suicide Zombie by hitting his grenade


Explosive personality!
Pick up a Panzerfaust


I kick arse for the Lord!
Pick up the Preacher

Set difficulty to Cadet and enemy setup for 1 player. Even then, these are very difficult to get solo. Around wave 7, the amount of zombies and elites are just too much for 1 person. But for 2, it is very easy. You can host public matches until somebody joins you or you can find another person to play with.

Guts and glory
Reach at least Wave 10 with more gold medals than your companions


The 4 categories are: best shot, most kills, most revives and highest combo. Some people said you can even get this solo (as well as highest score achievement below) provided you can make it to wave 10 solo. I have not tested it so cannot confirm.

I'll teach ya how to shoot!
Reach at least Wave 10 with the highest score in any Horde Mode map


You're going to meet Death now...
Reach at least Wave 10 in Horde Mode – No Sanctuary


Zombies, man, they creep me out!
Reach at least Wave 10 in Horde Mode – Waves of Despair


You have...death around you
Reach Wave 10 in Horde Mode – Dead End


You're going to have to work for your meal
Reach at least Wave 10 in Horde Mode – Flood of Tears


They're coming to get you, Barbra!
Reach Wave 10 in Horde Mode – Dead Man's Bluff

Got the killshot!
Kill 20 Elites in co-op


These are the slow, machine gun wielders. Some have said that it's possible to get this solo while in a private lobby. You should get them naturally either way.

Down but not out
Kill a total of 20 enemies while incapacitated


While in a downed state, with your pistol out.

Got your back
Kill 50 enemies that are actively attacking other players


Wait for zombies to lunge at your teammate and then kill them.

A friend in need
Revive other players 50 times


You will get most of these through normal gameplay (if playing with others) so do this last. Easy way to farm this is by finding a burning fire somewhere where your teammate can step on. Or just keep 1-2 zombies alive that will continuously down your teammate.

You're so dead, you don't even know it
Complete any Campaign chapter in 4-player co-op at any difficulty level


Finding 3 other people to get this with will be very hard. So your next best bet would be to just matchmake or host public matches until you do find a full lobby. Some said you need to be in the lobby with 3 others before starting the match, and finish together. Some said it's ok to join a game in progress. I didn't get it when I started with 3 people (1 guy disconnected but reconnected). I did get it when I joined a game in progress. So it's anyone's guess. If you do not get it the first time, just keep trying.