Unlockable - New Hats | |
| Blond Hair | Beat the final boss on Hard mode. |
| Pirate Hat | On level 1-1 destroy Hairy Nanny Daycare right after the miniboss. |
| Tom Fulp hair | Change your hominid's name to tomfulp |
| Jouster hat | Beat level 3-4 on Hard |
| Dimond tirera | Beat level 2-2 on Hard |
| Private Eye hat | Beat level 3-2 on Hard |
| Brown Hat | Kill at least 7 birds in level 2-5. |
| Area 51 Hat | Get to level 3-1 |
| Curly Hair Wig | Blow up the Fish are like plants building in level 1-4 |
| Soviet Hat | Get to level 2-1 |
| Top Hat and Flower Ring | Beat level 1-1 with gore mode off on any difficulty |
| Shark Fin | Go to level 2-4 and dig underneath the snowmobile and suffocate |
Unlockable - Unlockable Mini-Games | |
| Challenge | Complete World 1 |
| Super Soviet Missle Mastar | Complete 1-5 |
| Piñata Boss | beat the first miniboss in 1-1, any difficulty |
| Neutron Ball | beat 1-1, any difficulty |
| PDA Games | - (available at start) |
Unlockable - All Hats | |
| 30. Black and White hat | Beat 3-1 |
| 2. Brown Hair (male) | On hard, jump off the spaceship before the screen fades after beating the final boss |
| 29. Goggles | In 1-4 beat the helicopter without losing tank (you still lose the take when the helicopter crashes down) |
| 28. Ears | Beat 2-2 |
| 26. Yellow Shark Fin | In 2-4 dig/suffocate before riding snowmobile |
| 27. Conical brown hat | Beat 2-2 |
| 24. Rooster Hat | In 1-4 destroy the Behemoth-logo building |
| 25. Jester's Cap | Beat 3-4 on hard |
| 23. Indian Feather | - (available at start) |
| 21. KGB Agent hat | Beat 2-1 |
| 22. Pirate Hat | In 1-1 destroy "Hairy Mommy Daycare" |
| 20. Area 51 agent hat | Beat 3-2 |
| 18. Flower | - (available at start) |
| 19. Viking Hat | - (available at start) |
| 16. Chef Hat | Beat 1-3 |
| 17. Conical purple hat | In 1-3 destroy "Castle of Crap" building |
| 15. Nurse Cap | In 3-5, get to final boss (don't have to win) |
| 14. Private Eye hat | Beat 3-2 on hard |
| 13. Daisy-petal hat | Beat 2-3 |
| 12. Tiara | Beat 2-2 on hard |
| 11. Stove Pipe Hat | Beat 1-1 with gore off |
| 9. Vietnamese Hat | - (available at start) |
| 10. Crown of Flowers | Beat 1-1 with gore off |
| 8. Red Bandana | Beat 1-4 |
| 7. Jheri Curl | In 1-4 destroy "fish are like plants" building |
| 6. Black Afro | Beat 1-5 |
| 5. Brown Wig/Pearls | Beat 1-3 |
| 4. Blond Wig/Pearls | Beat 1-2 |
| 3. Brown Hat | In 2-5, kill 7 birds |
| 0. No Hat | - (available at start) |
| 1. Red Baseball Cap | - (available at start) |
Unlockable - All Hats, Levels unlocked | |
| All Hats, Levels Unlocked | Name your alien ROYGBIV. |
Password - Hat Passwords | |
| In the Player Name Option Screen, name your Hominid the following to get the new head topping for two-player games: | |
| unlock hat # 11 | grrl |
| unlock hat # 12 | abe |
| unlock hat # 13 | princess |
| unlock hat # 14 | dandy |
| unlock hat # 8 | goodman |
| unlock hat # 4 | cletus |
| unlock hat # 5 | april |
| unlock hat # 7 | superfly |
| unlock hat # 24 | behemoth |
| unlock hat #2 (Brown Hair - male) | tomfulp |
