Alien Hominid - Unlock hair

Unlock hair

Pirate Hat: On level 1-1 destroy Hairy Nanny Daycare
Curly Hair Wig: Destroy the Fish are like plants building in level 1-5
Soviet Hat: Get to level 2-1
Dimond tirera: Beat level 2-2 on Hard
Area 51 Hat: Get to level 3-1
Private Eye hat: Beat level 3-2 on Hard
Jouster hat: Beat level 3-4 on Hard
Tom Fulp hair: Name your hominid tomfulp
Blond Hair: Beat last boss on hard.

Hidden Hats

In the Options Menu, where you can rename your alien, use the following names to unlock hidden hats for the 2 player game:

cletus
april
superfly
goodman
grrl
abe
princess
dandy