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.
No Where To Run
Zombliterator
Underground
Rasta Gonna Get Ya!
Back To Back
Killer Clown
Zombinator
Undeadz 4 Lyfe Yo
The Bride
Dead Monk
You'z Got Bit
Survive 15 Minutes In Menu
What's On Tv?
Shekly Shot Eye
Zombie Slayer
The Beauty Of Birth
Hawk Eye
Prep For Bravery
kill 500 Menu Zoms
Kill 100 Menu Zoms
Kill 50 Menu Zoms
Tea Party
Zombie Hunter
Hell's For The Homeless
Chewy Dogz
Don't Smoke
Some Tongue?
Hard Ass Hooker
Trip 'Em
Blow 'Em Up