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
Hard Ass Hooker
Killer Clown
Back To Back
Rasta Gonna Get Ya!
Zombinator
Underground
Shekly Shot Eye
What's On Tv?
The Bride
Undeadz 4 Lyfe Yo
Trip 'Em
Survive 15 Minutes In Menu
kill 500 Menu Zoms
Kill 100 Menu Zoms
Kill 50 Menu Zoms
Zombie Slayer
Tea Party
Hawk Eye
Prep For Bravery
Dead Monk
Zombie Hunter
Some Tongue?
Chewy Dogz
Don't Smoke
Hell's For The Homeless
The Beauty Of Birth
Blow 'Em Up
You'z Got Bit