Collect ten golden skulls to unlock Lost Levels mode.Tower Of Nanar Co-Op mode
Collect six golden skulls to unlock Tower Of Nanar Co-Op mode.Antarctica Temple
Successfully complete all Akumpa Ruins levels to unlock the Antarctica Temple. View the True ending to unlock the Antarctica Temple for all characters.Counseil's Duty Free Shop
Collect twelve golden skulls to unlock Counseil's Duty Free Shop.Bonus characters
Successfully complete the indicated task to unlock the corresponding character:
- Commander Video: Collect eight golden skulls.
- Curly Brace: Collect 30 golden skulls.
- El Testigo: Collect 26 golden skulls.
- Jim Hawkins: View the "True" ending.
- Juni: Collect 18 golden skulls.
- President Thompson: Collect 20 golden skulls.
- Sugimoto: Collect 16 golden skulls.
- Tina Hawkins: Successfully complete Ukampa Ruins.
- Zombie: Collect 23 golden skulls.
Obtain the Key Of Serpentis, then play Level 10-7: "Jokulkyrkja" in Antarctica. Jump on the platform with the serpent symbol, and it will lower into a Boss fight. Defeat the Boss by throwing knives at the crystals on the ceiling to break each section of the dragon platform you are riding on. After the Boss has been defeated, you will unlock the Antarctica Temple for all characters, Jim Hawkins, and the "True" (alternate) ending.Alternate character's color
Collect four golden skulls to unlock the ability to change the character's color.Getting the Key Of Serpentis
Play Level 2-1: "Rush Into The Ruin" in the Ukampa Temple. On the right side of the exit is a unique block with a key symbol. Remove the key block, and enter the new area to the right of the exit. Note: Removing the block may require all golden skulls. Search in the center of the temple area to find the Key Of Serpentis.Pokemon reference
Successfully complete World 1, and watch the video sequence. Aban will talk about the temple of Poko-mum and refer to it as "Pocket Monster", which is the Japanese title for the Pokemon series of games.