Complete the indicated task to unlock the corresponding costume.

Costume	Task
2. Hat: Naughty the Party Animal	Complete Chapter 1.
3. Hat: Mayor Naughty	Complete Chapter 2.
4. Hat: Peacekeeper Naughty	Complete Chapter 3.
5. Hat: Cordon Bleu Naughty	Complete Chapter 4.
6. Hat: Prospector Naughty	Complete Chapter 5.
7. Hat: Doctor Naughty	Complete Chapter 6.
8. Hat: Conspiracy Naughty	Complete Chapter 7.
9. Hat: Cop Naughty	Get A "Gold" rank on Episode 1.
10. Hat: Adept Naughty	Get A "Gold" rank on Episode 2.
11. Hat: General Naughty	Get A "Gold" rank on Episode 3.
12. Hat: Zumbo-Jumbo Naughty	Get A "Gold" rank on Episode 4.
13. Hat: Tactical Naughty	Get A "Gold" rank on Episode 5.
14. Hat: Tech-Naughty	Get A "Gold" rank on Episode 6.
15. Hat: Astro-Naughty	Get A "Gold" rank on Episode 7.
16. Sherrif Naughty	Get A "Bronze" rank on Chapter 1-1, 1-2, and 1-3.
17. Master Naughty	Get A "Bronze" rank on Chapter 2-1, 2-2, and 2-3.
18. Captain Naughty	Get A "Bronze" rank on Chapter 3-1, 3-2, and 3-3.
19. Zombear Naughty	Get A "Bronze" rank on Chapter 4-1, 4-2, and 4-3.
20. N.O.T.Y.	Get A "Bronze" rank on Chapter 5-1, 5-2, and 5-3.
21. R0B0-N4UGH7Y	Get A "Bronze" rank on Chapter 6-1, 6-2, and 6-3.
22. Xnothy	Get A "Bronze" rank on Chapter 7-1, 7-2, and 7-3.
23. Cop Gordon	Get A "Gold" rank on Chapter 1-1, 1-2, and 1-3.
24. Master Miyagi	Get A "Gold" rank on Chapter 2-1, 2-2, and 2-3.
25. Colonel Ketchup	Get A "Gold" rank on Chapter 3-1, 3-2, and 3-3.
26. Zombear Oodoo	Get A "Gold" rank on Chapter 4-1, 4-2, and 4-3.
27. E.L.I.T.E. Mahoney	Get A "Gold" rank on Chapter 5-1, 5-2, and 5-3.
28. R0B0-PR1M3	Get A "Gold" rank on Chapter 6-1, 6-2, and 6-3.
29. Emperor Xoon	Get A "Gold" rank on Chapter 7-1, 7-2, and 7-3.
30. Naughticorn	Get a total score of 100,000,000 points.
31. Hat: Epic Naughty	Get a "Gold" rank on all Top Hat Challenges.

Note: The other unlockable costumes are only available through Gamestop and Amazon.com pre-order codes.