You've completed your first wave... aww, how cute! WHO CARES!?

Take out the boss in "No Escape" while playing in the "Overloaded" game mode

Clear 10 waves while playing in the "Overloaded" game mode. Your skills are improving!

Clear 20 waves while playing in the "Overloaded" game mode! That's a lot of zombies!!

Unlocked Corned Map! Good luck! It's a tough road ahead!

*Secret Unlocked* Nice aim! Killed 7 zombies with just one shot of the space gun!

*Secret Unlocked* have 1,000 or more bones collected at one time!

Complete five while taking on zombies in the "Cornered" map

Survived through 20 waves while playing in the "Cornered" map! Wow!

Upgraded all stat categories at least once. You're getting stronger!

You've fully upgraded your character to the MAX! You're one tough zombie slayer!!

Score over 250,000 points while playing in the "Overloaded" game mode.

Or just stupid! You score over 100,000 points while not shooting at any zombies!

We have to explain this? Okay... well... You got 100 kills... contrats I guess?

You've killed 500 zombies... I think you're starting to learn...

Kill 1,000 zombies... that's a lot of bullets!

You've seriously killed 10,000 zombies?! WOW. That's some dedication!

You've purchases all skins! You have a shopping addiction!

You've completed all of the achievements! All that is left is for you to dominate the leaderboards!

You've scored 50,000 points in a round of the "Pacifism" game mode!

Collected 1,500 items while playing in the "Overloaded" game mode!