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