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