Alien Hominid Cheats

On level 1-4 you must destroy the behemoth building if you do this
code correctly you should here a horn make a noise which means you
have gotten a rooster hat!

Go into the options menu and enter one of the following names as a player name. Select "Submit", and you will hear the foghorn sound if you entered the code correctly. Go into the hat menu and the corresponding hat will be unlocked:
 
Hat Name
2 (Tom Fulp) TomFulp
4 (Blonde hair) Cletus
5 (Red hair) April
7 (Jheri curl) Superfly
8 (Pirate bandana) Goodman
11 (Top hat) Grrl
12 (Diamond tiara) Abe
13 (Daisy headdress) Princess or Betty
14 (Dick Tracy hat) Dandy

Unlock Hair
Area 51 Hat:
Get to level 3-1
Blond Hair:
Beat last boss on hard
Curly Hair Wig:
Destroy the “Fish are like plants” building in level 1-5
Diamond Tirera:
Beat level 2-2 on Hard
Pirate Hat:
On level 1-1 destroy Hairy Nanny Daycare
Soviet Hat:
Get to level 2-1

Private Eye hat:
Beat level 3-2 on Hard
Jouster hat:
Beat level 3-4 on Hard
Tom Fulp hair:
Name your Hominid Tomfulp

Hidden Hats
At the Options Menu where you can rename your alien enter the following names to unlock hidden hats for the two player game.
abe
april
dandy
cletus
goodman
grrl
princess
superfly

Blond Hair Beat the final boss on Hard mode.
Pirate Hat On level 1-1 destroy Hairy Nanny Daycare right after the miniboss.

Area 51 Hat - Get to level 3-1
Soviet Hat - Get to level 2-1
Pirate Hat - On level 1-1 destroy Hairy Nanny Daycare right after the miniboss.
Blond Hair - Beat the final boss on Hard mode.
Curly Hair Wig - Blow up the Fish are like plants building in level 1-5

* 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.