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