These achievements are the easiest ones to achieve. Don't feel bad about how you didn't achieve them, because they are listed right here!

I Read the Rules! (1 boss coin): Click on the rules button in the game's spawn, but I recommend you should actually click on the url link of the rules

Doink! (1 boss coin): Crash into any player and stun them. You are required to have a great amount of speed and hit someone, and that you have to die from the impact for it to register

Getting an Upgrade (1 boss coin): Download the Boss Battles GUI and connect to the server to claim your reward

These achievements mark the amount of rounds you've played against the Boss

Worthy Trainee (1 boss coin): Play 5 rounds against the Boss

Private (2 boss coins): Play 10 rounds against the Boss

Specialist (3 boss coins): Play 20 rounds against the Boss

Corporal (4 boss coins): Play 40 rounds against the Boss

Sergeant (5 boss coins): Play 80 rounds against the Boss

Major (7 boss coins): Play 160 rounds against the Boss

Colonel (10 boss coins): Play 320 rounds against the Boss

General (12 boss coins): Play 640 rounds against the Boss

Warlord (15 boss coins): Lead armies for many moons; in other words, play 1280 rounds against the Boss

These achievements can be obtained only when you're Boss

My Time to Shine (1 boss coin): Get picked to play as the Boss in a round

Time to Destroy! (5 boss coins): Get picked to play as the Boss for 50 rounds total of your gameplay

Cramped Crypt ( boss coins): Kill a team of 30 Normals as the Boss. This achievement is one of the hardest achievements to obtain. There needs to be at least 31 players in the server, including yourself, and that you need to officially kill 30 Normals, which means that Normals can die by fall/wall/self damage and not count as a kill

Bane of the People (5 boss coins): Kill a total of 100 Normals in your gameplay

Now I Am Become Death (5 boss coins): As Mocheeze, possess a Normal wielding a Golden Wrench, then use the group heal ability to heal yourself. NOTE: This achievement is currently unavailable due to the selection of Mocheeze disabled

I Win Again! (2 boss coins): Win two times as the Boss

These achievements are accumulated by the damage you've dealt and murders...

Killing Blow (2 boss coins): Kill the Boss with any weapon. This does not count if you assisted in killing the Boss. It will count, however, if the Boss manages to die from fall/wall/self damage and he's marked as "finished off"

Ready, Set, Game Over (4 boss coins): Kill the Boss within 30 seconds of the round. Any kind of stab will increase your chances of getting this achievement. Again, this does not count by assistance of killing the Boss. However, its still achieved if the Boss dies from fall/wall/self damage and marked as "finished off"

Backstabbed! (2 boss coins): As an Infiltrator/Gentlespy, backstab the Boss with your knife. This can still be achieved if the Boss survives the backstab. It can also be achieved by Gentlespy's cloakstab with the Cloak&Dagger

Last Man Standing (2 boss coins): Kill the Boss as the last living Normal in your team. Will still count if the Boss is finished off

MVP (3 boss coins): Deal the most damage to the Boss in a round

Warrior (5 boss coins): Deal the most damage to the Boss in 10 rounds total

Gloriful Retribution (3 boss coins): Strike the Boss with the Golden Wrench

Cannon'd! (2 boss coins): Directly hit the Boss with a cannonball from a Pirate Cannon

Doctor Assisted Homicide (2 boss coins): As a Medic/Dr.Oktoberfest, strike the Boss with your Ubersaw

Master Cheif'd (2 boss coins): As Master Chief, successfully slash the Boss with a fully charged Energy Sword. In order to charge your Energy Sword, hold leftclick until you hear a sound that signals the charge. Let go of leftclick to strike a charged attack. (NOTE: ignore the misspelling of chief, its the actual spelling of the achievement)

Condition: Critical (4 boss coins): Survive any kind of damage and live with one health point

I'm not even mad... (1 boss coin): Manage to kill yourself with a cannonball. There's a chance that Badspot/Ephialtes can shockwave your cannonball back towards you, or you can aim very high with the cannon without charging it and quickly dismount and run into your cannonball

Ghost Blade (4 boss coins): As an Infiltrator/Gentlespy, backstab/cloakstab Mocheeze while he's in his ghost form. (NOTE: Mocheeze is currently disabled, therefore this achievement is unavailable)

Maximum Payout (1 boss coin): Earn 1000 points by damaging the Boss or healing teammates

All of these achievements, here in this section, are obtained by the Healer/Dr.Oktoberfest, or by the Golden Wrench.

Nurse (2 boss coins): Maintain the most healing in a round

Physician (4 boss coins): Maintain the most healing in a total of 5 rounds

Medical License (7 boss coins): Maintain the most healing in a total of 10 rounds

Charge Ready! (1 boss coin): Reach 100% uber with your Medigun

Wrenchievement! (2 boss coins): Receive the Golden Wrench randomly. This can only count if you pull out the Golden Wrench from your items

Paladin of the Light (4 boss coins): Revive a total of 5 Normals in a round. In order to revive a teammate(s), use rightclick to activate group heal. Anyone (besides the Boss) that's in your group heal circle will be healed (if alive) and revived (if dead, but with half of their health). You have a 1 minute cooldown for each group heal. If you managed to die with the Wrench, everyone that you revived will die as well, so try to stay alive.

Find hidden treasure chests in any map to achieve these achievements!

Treasure Hunter (1 boss coin): Find a chest, any chest!

Indiana Jones (4 boss coins): Find all of the chests in a map (besides the Golden Chest)

Hold a certain amount of points to achieve some rewards.

Amanico Ortega (2 boss coins): Accumuate 500,000 points

Bill Gates (4 boss coins): Accumulate a million points. This achievement will reward you the Millionaire title

Carlos Slim Helu (5 boss coins): Accumulate 2 million points

They may be secret, but they aren't now!

Cake Boss (4 boss coins): Find a cake and click it

Leet Hacker (5 boss coins): Find a panel in the Code Room and activate it

Brute Force (9 boss coins): Unlock the Code Room. This achievement will reward you the Hacker title

Ultimate Hacker (50 boss coins): Unlock the second Code Room. Trust me, its difficult as a snowball surviving the devil's microwave

Meet your Maker? (5 boss coins): Play a round against Pecon7 when he's/she's/its the Boss

Beat your Maker?! (9 boss coins): Officially kill Pecon7 when he's/she's/its the Boss

The Secret Phrase (1 boss coin): Type in Hail DSH and SUFFER FROM THE LORD HIMSELF AFTER YOU ACHIEVE THIS

Nuff said.

Its Like Christmas Morning (3 boss coin): Find a present

Stealing Christmas (5 boss coins): "Steal" 5 presents

You're a Mean One (20 boss coins): Grinch out 100 presents. You will get The Grinch title

Invoker (1 boss coin): The current way of achieving this is unknown, however it rewards the Invoker title

I AM LEGEND (20 boss coins): Obtain all of the chests in the Bedroom map. You are rewarded with The Legendary title