Get through the sewers without being bitten by a rat
Level: #1 The Lab
Difficulty: Easy (recommendation)
Players: solo
Character: Natascha
When reaching the canalisation just avoid the rats going up and down and don't let them jump on you.

Get through the sewers without raising a hand to a pig
Level: #1 The Lab
Difficulty: Easy (recommendation)
Players: solo
Just don't attack the pigs going through the sewers. If you don't get close, they won't attack you too.

Escort the prisoner without letting him take any hit
Level: #2 The Jail
Difficulty: Easy (recommendation)
Players: 2 or more
This achievement is pretty hard to do aloneby yourself. At least one player should secure the front, while at least another one secures the back. Let no one touch the prisoner and always keep an eye on him.

Defeat the Prison Governor without being hit by a sniper
Level: #2 The Jail
Difficulty: Easy (recommendation)
Players: solo
Character: Natascha
Get through the level until the boss (don't forget to grab a gun from the glass cabinet). The only important thing is to watch the laser pointer. You can cross it, but never get near the dot or be quick enough so that the sniper won't hit you. The easiest way to defeat the boss is crossing his line to make him shoot, after a couple of shots he will reload. You can shoot easily three times when he is reloading.

Defeat the Dealers' leader without ending up under the harvester
Level: #3 The Squat
Difficulty: Easy (recommendation)
Players: solo
Get through the level until the boss. Keep evading until the guy with the baseball bat appears. Get his bat and keep hitting her in the direction of the harvester. After a couple of hits (depending on the difficulty) she dies. Until that avoid the left side of the screen and try to stay on the right side of the opponents to not get under the harvester.

Leave the train without letting the inspectors call for backup
Level: #4 The Train
Difficulty: Easy (recommendation)
Players: 2 or more
While in the train you will find an abandoned ringing walkie-talkie with a short cut-scene. Grab it and defend it from the conductors. If you lose it try to make them drop it, by sliding, throwing or kicking them. Then grab it as fast as you can. If you fail you got to restart the whole level and try it again.

Reach your destination without being hit by a grenade
Level: #4 The Train
Difficulty: Easy (recommendation)
Players: solo
After the train station and the part inside the train, you will end up on the roof of the train. At some time you will have another train with comrades on it throwing grenades at your train. Just move away as far as possible from them. Throwing the enemies to the grenades makes your job easier.

Defeat the Government officer without being hit by a train
Level: #4 The Train
Difficulty: Easy (recommendation)
Players: solo
Get through the level until you reach the rail part. The trains alternate rushing through on the upper and the lower rails. Shortly before the rails where the train rushes through are vibrating, so always keep an eye on them and move away fast enough. You may throw the enemies to keep them on the rails where the next train will arrive to get them out of the way. Keep continuing until you reach the boss. It's important that no train hit you until then. Grab the flash grenades Vlad is throwing above the fence and throw them at the boss while the rails are starting to vibrate and he stands on them. Don't forget to move away quickly.

Keep the Gimp alive
Level: #5 The Club
Difficulty: Easy (recommendation)
Players: 2 or more
When reaching the gimp, just fight your imaginary clones and the pig transvestites without letting the gimp die. He can get hit, but should not die until you reach the boss.

Defeat the Butcher without being hit by his claw
Level: #5 The Club
Difficulty: Easy (recommendation)
Players: 1 or 2
Get through the level until the boss arrives. Avoid his claw (the grapling hook) at all times. You can provoke him throwing it if you run through his line. If he hit one of the slaves get behind him as you got some time while he is finishing him off. So punch him as long as you can. If he get downed get on him and continue punching, but avoid his cleaver (you may stand up with the kick button). You may choose to play it with a friend, but in this case none of you should get hit by his claw.

Cross the boulevard without being hit by a motorbike
Level: #6 The City
Difficulty: Easy (recommendation)
Players: solo
Pretty early motorbikes will rush through the screen. It's pretty hard to recognize them early, so always be ready to jump kick them or move up or down. Jump kick them is a pretty good way as they won't come back when dead. If you reach the wall of cops and didn't get hit you're done.

Kill 40 riot policemen as you cross the main square
Level: #6 The City
Difficulty: Easy (recommendation)
Players: 1 - 4
When you reach the wall of cops with shields try to kill as many as possible until you reach the end and the grey smoke comes up. You can restart at this time to get a higher kill count. Also your antifascist friends may help with molotow cocktails, so protect them and don't throw the grenades near them. This will be much quicker with a couple of friends.

Complete the arena in less than 5 minutes
Level: #7 The Arena
Difficulty: Easy (recommendation)
Players: 1 - 4
Character: Ivan
Just rush the level and kill the enemies as fast as possible. Not dying is important to get through fast enough. Also always try to get a gun, as you can kill the enemies much faster. At the boss grab the steel beam and stay close to him to punch often. Of course you should still avoid his punches.

Get through the hall without being hit by the chopper
Level: #8 The Penthouse
Difficulty: Easy (recommendation)
Players: solo
Character: Natascha
At about the middle of the level you reach a corridor with three big windows. A chopper will arise behind them and will try to shoot you. Always avoid it and move on as long as it follows you. With some practice you can also lure the enemies to chopper or vice versa.

Achieve a 100 hit combo
Level: any
Difficulty: Normal or Hardcore (recommendation)
Players: solo
Character: Natascha
The combo is shown beneath your name and above your life bar. If you hit enemies it will rise. After about 5 seconds without a hit you will start from beginning, so your goal is to keep a steady streak of hits on the enemies. The Arena mode is a good way to have enough enemies to keep the streak alive. Getting hit doesn't end the streak but may make it hard to keep it up. A harder difficulty may make it easier as more enemies arrive on higher difficulties. There are also achievements for receiving a 200 hit combo and a 500 hit combo.

Achieve a 200 hit combo
Level: any
Difficulty: Normal or Hardcore (recommendation)
Players: solo
Character: Natascha
The combo is shown beneath your name and above your life bar. If you hit enemies it will rise. After about 5 seconds without a hit you will start from beginning, so your goal is to keep a steady streak of hits on the enemies. The Arena mode is a good way to have enough enemies to keep the streak alive. Getting hit doesn't end the streak but may make it hard to keep it up. A harder difficulty may make it easier as more enemies arrive on higher difficulties. You will automatically get the achievement "Puncher". There is also an achievement for receiving a 500 hit combo.

Achieve a 500 hit combo
Level: any
Difficulty: Normal or Hardcore (recommendation)
Players: solo
Character: Natascha
The combo is shown beneath your name and above your life bar. If you hit enemies it will rise. After about 5 seconds without a hit you will start from beginning, so your goal is to keep a steady streak of hits on the enemies. The Arena mode is a good way to have enough enemies to keep the streak alive. Getting hit doesn't end the streak but may make it hard to keep it up. A harder difficulty may make it easier as more enemies arrive on higher difficulties. You will automatically get the achievements "Puncher" and "Slayer".

Use an enemy to knock down another 5
Level: any
Difficulty: Normal or Hardcore (recommendation)
Players: solo
This is one of the easiest achievements. Just throw an enemy towards a group of at least five other enemies and knock them down. Playing the Arena mode will let you meet more than enough enemies to get this achievement more or less automatically.

Complete a level without being hit
Level: any
Difficulty: Easy (recommendation)
Players: solo
I highly recommended the first Level "The Lab". Avoiding the enemies is important so you may choose Natascha or Andrey. Sliding and jump kicking is a good strategy. Also throwing enemies will make you invulnerable for a short moment but is difficult to use effectively. As you don't need nekro for healing (you need to heal if you don't get it), you can always switch to Berserk mode. But keep in mind it's sometimes hard to keep the overview while in Berserk mode.

Empty a cartridge clip without any random shot
Level: any
Difficulty: Easy (recommendation)
Players: solo
A good level is "The City" because you get many AK rifles and so got a couple of tries. Just don't miss a single shot with a new AK until it's empty.
Another method, which is a little easier, is using a shotgun. There are just lesser occasions to get one.

Complete a level without using any weapon
Level: any
Difficulty: Easy (recommendation)
Players: 1 - 4
I recommend an early level like "The Lab". Don't even pickup a weapon and keep in mind you also have to kill the boss without weapons as some bosses are very hard to kill without weapons.

Complete a level without taking any Nekro
Level: any
Difficulty: Easy (recommendation)
Players: solo
An early level is recommended, but not "The Lab" as you don't start it with full life. Never use nekro, neither for healing nor for entering the Berserk mode.

Get gnawed by 5 rats at the same time
Level: #1 The Lab
Difficulty: Easy (recommendation)
Players: solo
If you reach the canalisation just run towards the rats. It's very easy.

Complete a level without anyone on the team being killed
Level: any
Difficulty: Easy (recommendation)
Players: 2 or more
You got to play with one friend at least. An early level like "The Lab" is recommended as those are easier. Use nekro on a regular basis to keep your and your friend's health high. Keep in mind you also have to win the boss fight.

Complete a level without hitting any ally
Level: any
Difficulty: Easy (recommendation)
Players: 2
For this achievement you need to play with a friend and enable friendly fire. Choose an early level and stay away from the other player (one left, one right will work the best).

Complete a level without letting anyone on the team get hit
Level: any
Difficulty: Easy (recommendation)
Players: 2
Just like the achievement "God" you will need to finish the level without getting hit at any time, not even at the boss fight, but this time with another player. An early level like "The Lab" will make your job easier. Use the nekro only to get in the Berserk mode, as you don't need to get healed.

Successfully hand a knife to your ally
Level: any
Difficulty: Hardcore (recommendation)
Players: 2
You need another player to get this achievement. Grab a knife and throw it towards the other player. The other player needs to grab it in the right moment. If you see an enemy with a knife knock him down and then clear the area. Don't grab the knife and don't let any enemy grab the knife, as it may get thrown out of the screen. If all enemies are dead and you could continue, you can try your luck. I would recommended an early level like "The Prison". It may also work with a bot, but may be harder to accomplish that way.

Complete the game in Easy mode
Level: finish all
Difficulty: Easy (recommendation)
Players: the more the better
Just finish the game on any difficulty. Starting over with "normal" might be helpful to get warm with the game. Of course you can also play it on "easy" but keep in mind you have to play on the other difficulties too to get the other achievements "Druggie" and "Crackhead".

Complete the game in Normal mode
Level: finish all
Difficulty: Normal (recommendation)
Players: the more the better
You need to play on "normal" or "hardcore" to get this achievement. It gets easier the more friends you play with.

Complete the game in Hardcore mode
Level: finish all
Difficulty: Hardcore (recommendation)
Players: the more the better
This one is tough. Get as many friends as you can get. You should also finished the game already and know the levels, as well as the ways to kill the bosses well. You will receive "Junkie" and "Druggie" too, if you don't got them already.

Complete the game with the sad ending
Level: #8 The Penthouse
Difficulty: Easy (recommendation)
Players: solo
Fight through the level until you fight Nekro. At some time just use nekro (for healing or entering Berserk mode). After you won the fight you can enjoy the sad ending and get the achievement.

Complete the game with the happy ending
Level: #8 The Penthouse
Difficulty: Easy (recommendation)
Players: solo
Just get through the level until you fight Nekro. Fighting Nekro without using nekro (the drug).

100% complete the game
Level: finish all
Difficulty: Hardcore (for beating the game), Easy (for "I had a dream")
You need to beat the game on "hardcore", get the achievement "I had a dream" to unlock the last arena and get all drugs by reaching wave 10 of every arena.