Attain 100% Game Completion statistic in Undead Nightmare.

Find and break a unicorn.

Attain Rank 5 in all Undead Nightmare Challenges.

Complete "Mother Superior Blues Survivor Mission".

Unlock all trophies.

Find the Crab.

Complete the game in hard mode in under 70 clicks.

Find the sea turtle.

Complete the game in medium mode in under 20 clicks.

Find the starfish.

Complete the game in easy mode in under 20 seconds.

Find the cow.