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.
Trip 'Em
No Where To Run
Zombliterator
Killer Clown
Back To Back
Rasta Gonna Get Ya!
What's On Tv?
Zombinator
Undeadz 4 Lyfe Yo
The Bride
Shekly Shot Eye
Dead Monk
Tea Party
Zombie Slayer
Prep For Bravery
Hawk Eye
Underground
The Beauty Of Birth
Zombie Hunter
Hell's For The Homeless
Blow 'Em Up
Don't Smoke
Chewy Dogz
Some Tongue?
Hard Ass Hooker
You'z Got Bit
Kill 50 Menu Zoms
Survive 15 Minutes In Menu
Kill 100 Menu Zoms
kill 500 Menu Zoms