1001 Spikes

[final kaoss]

Alternate ending

Acquire the Key of Serpentis, then play level 10-7, "Jokulkyrkja", in Antarctica. Get on the platform with the odd snake sign and it will certainly decrease into a Boss battle. Beat in charge by tossing knives at the crystals on the ceiling in order to break each area of the dragon platform you are riding on. After in charge has actually been beat you will certainly unlock Antarctica for all characters, Jim Hawkins, and the alternate ending.

[final kaoss]

Antarctica Temple

Complete all Akumpa Ruins levels. To unlock Antarctica Temple for all characters, view the True ending.

[final kaoss]

Character Colors

You can adjust your character's color palette once you collect four golden skulls.

[final kaoss]

Commander Video

To unlock Commander Video, collect 6 golden skulls.

[final kaoss]

Counseil's Duty Free Shop

Collect twelve Golden Skulls.

[final kaoss]

Easy "Serpentine" Trophy

You can find the Key of Serpentis in level 2-1, near the exit door. It only becomes accessible after unlocking Antarctica and when using Aban Hawkins, the main character.

[final kaoss]

Easy 'Stone Cold' Trophy

To earn this trophy you must complete Antarctica. The way to do this is to get the Key of Serpentis so you can unlock the final stage and Boss and then kill that Boss.

[final kaoss]

Key of Serpentis

Play level 2-1, "Rush into the Ruin", at the Ukampa Temple. One 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. The Key of Serpentis can be found in the center of the temple area.

[final kaoss]

Lost Levels mode

Collect ten Golden Skulls.

[final kaoss]

Pokemon Reference

After you clear the first world, a long cutscene follows. Aban will talk about the temple of Poko-mum and mistakenly refer to it as Pocket Monster, which was the original name for Pokemon.

[final kaoss]

Tower of Nanar

To unlock the cooperative mode, Tower of Nanar, collect 5 golden skulls.

[final kaoss]

Various Characters

Complete the indicated task to unlock the corresponding character.

Character	How to unlock
Commander Video	Collect eight Golden Skulls.
Curly Brace	Collect thirty Golden Skulls.
El Testigo	Collect twenty six Golden Skulls.
Jim Hawkins	View the True ending.
Juni	Collect eighteen Golden Skulls.
President Thompson	Collect twenty Golden Skulls.
Sugimoto	Collect sixteen Golden Skulls.
Tina Hawkins	Complete Ukampa Ruins.
Zombie	Collect twenty three Golden Skulls.

[final kaoss]

Various Trophies

Complete the following tasks to unlock PlayStation 4 trophy rewards.

Trophy	How to unlock
Collector (Gold)	Unlock every character and costume.
Golden Boy (Silver)	Complete the Golden Temple.
Headhunter (Silver)	Collect all golden skulls.
Lost and Found (Bronze)	Complete the Lost Levels.
Serpentine (Bronze)	Find the Key of Serpentis.
Speed Runner (Silver)	Complete every stage of the main game as Aban Hawkins with a cumulative time of less than 30 minutes.
Stone Cold (Gold)	Complete Antarctica.
Towerful (Bronze)	Complete the Tower of Nannar.

[final kaoss]

How to get infinite free lives

1. Go to a level where a Golden Skull is easy to obtain and close to the beginning of the level (here, World 4 Stage 3 = Stage 4-3 Dangerous Exit then World 2 Stage 5 = Stage 2-5 Flaming Corridors).
2. Get the skull.
3. Wait for the 1up to appear and the life counter to register your additional life.
4. Press pause.
5. Select World map.
6. Repeat over and over until you are happy with the number of lives you have.

Please note that choosing Retry Stage removes one life and would thus defeat the purpose of this trick. You have to go back to the map for the new life to stay.