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