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