Collect all 10 red skulls in any single level
Earn the top score objective in any level
Complete any level-specific Reward Challenge
Collect all relics, artifacts and weapons
Play Co-op mode
Catch Totec with the grapple while he is jumping over a death fall
Reflect an enemy's projectile back to him using Totec's shield
Kill 3 enemies with one bomb
Jump from Totec's shield while he is jumping
Activate all of the spikes at once in the Spider Tomb spike field
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