Reward Challenges:
(✓) - Collect 10 Red Skulls (Golden Scepter of Huitzilopochtli)
(_) - Open the Spider Tomb in 5 minutes or less (Gold Owl)
(✓) - Cross the river without touching the water (Health Powerup)
(✓) - Find and defeat the Giant Demon Lizard (Ammo Powerup)
(✓) - Destroy all the trucks (Clay Lizard)
Collectibles:
(✓) - Ammo Powerup (3:35)
(✓) - Ammo Powerup (11:09)
(✓) - Ammo Powerup (15:46)
(✓) - Health Powerup (6:31)
(✓) - Health Powerup (9:44)
(✓) - Health Powerup (18:40)
(✓) - Assault Rifle (automatically given at start)
(✓) - Bolt Action Rifle (4:17)
(✓) - Shotgun (14:39)
(✓) - Clay Owl (7:49)
(✓) - Arrow of Tezcatlipoca (13:53)
(✓) - Stone Feather (16:00)