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