Here is the full list of all 30 Pixel Puzzles: UndeadZ achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Rasta Gonna Get Ya!
Back To Back
Undeadz 4 Lyfe Yo
Killer Clown
Survive 15 Minutes In Menu
kill 500 Menu Zoms
Kill 100 Menu Zoms
Kill 50 Menu Zoms
Zombinator
The Bride
What's On Tv?
Shekly Shot Eye
Dead Monk
Prep For Bravery
Zombie Slayer
Hawk Eye
Tea Party
Underground
The Beauty Of Birth
Blow 'Em Up
Zombie Hunter
Hell's For The Homeless
Chewy Dogz
Some Tongue?
Hard Ass Hooker
Don't Smoke
Trip 'Em
You'z Got Bit
Zombliterator
No Where To Run