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