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