This is a guide for those of you who want to as well.

In this guide I will give you in-depth analysis of each and every achievement, from the easiest to the most difficult (obviously).

Tips should be taken as TIPS and TIPS only, not full on strategies to getting said achievements.

Please enjoy and rate if you found success with this!

Probably the easiest ones to do. (Except the Hardest one.)

NOTE: Beating the Hardest difficulty unlocks ALL the achievements regarding beating the original gamemode. They are stacked achievements. So if you want to save time, beat Hardest difficulty with two people. That is no easy task for a beginner, so pick your poison: time or difficulty.

- Ankle deep in the dead: Finish the Dead Pixels gamemode on Easy or higher.
Insight: The game, on Easy mode, is only 10 streets long. It doesn't take much skill other than moving a mouse and clicking buttons. If you need practice, try Time Attack. Beating this mode usually takes maybe 30 to 45 minutes.

- Waist deep in the dead: Finish the Dead Pixels gamemode on Normal or higher. This gamemode is 20 streets long and might take some dedication to do, but still relatively easy. Usually the game is very generous with ammo if you are smart about buying and conserving it. Takes about 60 to 75 minutes to beat.

- Shoulder deep in the dead: Finish the Dead Pixels gamemode on Hard or higher. Now we are getting into "you need some practice" territory. This is long and strenuous and will not be a quick fly-by. 30 streets takes a long time and you need some dedication to make it work. Ammo is so important and you should always stock up on medkits. Grenades aren't your biggest asset, so don't bother too much with those. Usually takes about 90 to 120 minutes to beat.

- Buried in the dead: Finish the Dead Pixels gamemode on Hardest. This is the big one. It is 30 streets as well, but you may notice a note from the developers. (The AI Director hates you). AI being the zombies. More zombies will spawn and less supplies will be given to you from traders AND random houses. This is the 2nd hardest achievement in the game for a reason. It will take a large amount of time and you need to be smart and quick about upgrades, ammo and items. Takes at least 150 minutes to beat. Unless you run the whole time ;)

- Two against the world: Finish a co-op game on any difficulty. Just beat Easy mode with a friend. Best bet is to use controllers, plus it's fun! Sharing supplies is the only downside. The dual-screen menu interface is a bit tricky, so it takes some time to get used to waiting for your friend to (for example) get to a door or unpause the game. Just my 2 cents.

- Time attack: Complete a Last Stand time attack game. The Last Stand gamemode is for practice and, you guessed it, achievements. All you have to do is what the game tells you. Survive and kill zombies as quick as you can. Don't worry, there's no achievement for a specific amount of time it is beaten in.

- True ending: Finish the Solution gamemode on any difficulty. This is very simple. Beating this on Easy is your best bet. The only difference between this gamemode and Dead Pixels is the fact you cannot upgrade any skills and you must choose which character to play as. For best results, pick a character that suits your playing style (i.e. Melee, Sharpshooter, etc.).

Zombie kills are in the next section.

- Supply and demand: Sell a wanted item to a trader. This is the easiest achievement in the game. Usually in Easy mode the game throws you a bone and gives you an item the next trader wants. To see if you have an item a trader wants, just check if the WANTED option is big and green, that will give it away to you. You'll get it just by playing, I promise.

- Master of all skills: Max level all skills. In order to do this, instead of buying guns/items every time you're at the trader, just upgrade! Easier to do on Normal than Easy, due to the extended amount of streets. The game WILL tell you when you cannot upgrade anymore. Getting everything to Level 5 takes a bit of cash, so do it in regulation!

- Back from the dead, but in a good way: Resurrect a player in co-op. Let your partner die and enter a trader shop. This automatically brings him/her back to life. What happens to their body? You'll find out soon enough.

- If you've got the cash: Spend over a million dollars in trader stores. Thanks to AznaktaX: The 1 million dollars achievement can be cheesed with little to no effort. The "counter" does not keep track of your saves or anything else, so all you gotta do is save first, spend your money, DO NOT save, exit the game, come back, spend your money again, and repeat the process until the achievement is unlocked.

- Picked clean: Empty 300 buildings of items. Simple. If you play the game long enough and loot every building you see, this should come in no time. Also, sell your extra guns at the trader. You don't need them and they will give you a boost money-wise! Just a tip.

- Pack mule: Walk across an entire street over-encumbered. Being over-encumbered means having over the limit of items you can hold. I suggest not upgrading your strength. It is hard. Harder than a lot of other achievements, but it can be done. You need to be patient. Shoot everything. You cannot run, so shoot everything. Load up on ammo. Good luck.

- It don't belong to me: Complete a game without raiding a building. This is tough. Play on Easy and play alone. You have to extract all you can from the traders and DO NOT THINK YOU CAN LET ONE BUILDING GO. Pass it and cut your losses. Do not enter any buildings except a trader's to resist the temptation. Also, level up your luck so you get more ammo drops.

NOTE: The remaining achievements in this section are mini-bosses. They are on every 10th street, so playing on Hard would get you the most at-bats for getting an achievement. The mini-bosses are randomized, so it's possible to get a Queen every single time, or a Husk every game. Playing on Hard gives you 3 solid chances to get a new mini-boss.

- The Husk: Kill the burning husk in the original gamemode. He's on fire and all black, not hard to recognize. He will take a crud-load of hits but is afraid of machine guns and freeze rays. ;)

- The Experiment: See the medical experiment die in the original gamemode. Now, you DO have to kill him, but he is tricky. He doesn' take damage from normal bullets, so go in hot with a flamethrower or a nice shiny bazooka. Kill his minions first, they're annoying when you need to focus on killing him quickly.

- The Queen: Kill the Queen of spitters in the original gamemode. This one is easier, but comes with a batallion of army spitters and dad-spitters. Annoying as heck, take them out fast and be agile! The boss herself isn't too tough, just dodge and weave!

- The Fiend: Kill the clawed fiend in the original gamemode. Not much to say for this guy. He's probably easiest to take down with a nice dual/quadruple barreled shotgun. Bring the machinegun in case his crazies are faster than you.

- The Sergeant: Kill the ex-army sergeant in the original gamemode. Holy hell this guy is tough nuts. He brings a squad of army guys, old dudes and spitters, and takes little to no damage every shot. Being the heavy artillery and don't look back, this is one of the harder fights.

- The Infected: Kill the infected survivor in the original gamemode. This guy will take down his minions for health and is a stubbon jerk. Takes a load of hits to go down but is quite slow, so don't rush and take your time with taking him down. Take out the lackies if they are getting in the way or giving him health.

- Bloodbath: Reach a kill combo of 40. Basically just find a group of zombies and let a rip. If that's too hard, go into Time Attack and just wait until a bunch of them are rounded up, and you'll get this one. faster than you think, probably.

- Nice shot: Kill 5 zombies with one shot. Buy a rifle and line them up correctly. Make sure there are at least 5 zombies in a row, and let loose. Upgrading gun damage is helpful, and buying a gun with high penetration should get the job done. Should do this on weaker zombies, like the defaults.

- Saving ammo: Kill 60 zombies with melee attacks. This is not IN A ROW. Just do it at whatever pace you need. One zombie per street, whatever. I just upgraded my melee to the max and went all out in one go. This is typically easy so just make sure to hit space and try to do damage with your gun then killing them with melee. Remember: KILL 60 zombies, not full on bash their heads in with melee. Use guns effectively.

- It's a beginning: Get 1968 kills. Simple, just kill ALL the zombies! This is a reference to the year the movie "Night of the Living Dead", which came out in 1968. This achievement is more of an easter egg, and you shouldn't worry about it, since you will eventually kill a whole lot more than just 1,968 zombies.

- Kill it with fire: Set 150 zombies on fire. Go into Time Attack or Survival and buy a flamethrower immediately. This is so easy. You don't even have to KILL the zombies that you light on fire, just click, ignite, do it 150 times and you are done. This is similar to the Corpsicles achievement and the 50,000 volts achievement, where you use a freeze ray and any gun that uses volts as ammo.

- Corpsicles: Freeze 100 zombies. Go into Time Attack or Survival and buy a freeze ray immediately. This is so easy. You don't even have to KILL the zombies that you freeze, just do it 100 times and you are done. This is similar to the Kill it with fire achievement and the 50,000 volts achievement.

- 50,000 volts: Shock 150 zombies. Go into Time Attack or Survival and buy a volt-gun immediately. This is so easy. You don't even have to KILL the zombies that you shock, just do it 150 times and you are done. This is similar to the Kill it with fire achievement and the Corpsicles achievement. You musy buy a gun that uses volts for ammo.

- Chunks of zombies everywhere!: Kill 10 zombies with a grenade. Find a large group of zombies, buy an anti-tank grenade, and throw one smack in the middle of the hoarde. Make sure you aim well and don't miss, as those grenades are a pretty penny! Probably should do this in Dead Pixels or Time Attack/Survival. Your choice.

- Better than the guy that made the game: Survive 10 waves in the Last Stand Survival game mode. I have one tip for you. Do not hold back. Just shoot everything and buy the really cool-looking guns and be smart about not trapping yourself in corners. Just shoot them. This is easy, but not many people even know about the Survival mode. You CAN quit after reaching the end of wave 10.

- It's the humane thing to do: Kill your dead partner. Playing co-op, let your buddy die. He will respawn as a zombie who drops all the money that player had. Not a tough zombie to kill, and should be easy. Just don't think he's a normal zombie, he'll have all the health the original player had too!

THANK YOU FOR READING! I HOPE THIS HELPS!
Please rate or subscribe if you liked this guide, and tell me how I can make it better in the comments!

- TheSchiffelman