• Area 51 Hat: Get to level 3-1.
  • Blond Hair: Beat the final boss using hard difficulty.
  • Diamond Tierra: Beat Level 2-2 using hard difficulty.
  • Jouster Hat: Beat Level 3-4 using hard difficulty.
  • Private Eye Hat: Beat Level 3-2 using hard difficulty.
  • Soviet Union Hat: Get to level 2-1.