Here is the full list of all 41 Savage Age achievements.
Collect 10 Jade Skulls.
Collect 40 Jade Skulls.
Collect all 92 Jade Skulls.
Score 10 headshots.
Score 40 headshots.
Score 100 headshots.
Unlock Level 5.
Unlock Level 10.
Unlock Level 21.
Unlock Level 22 (Hidden level).
Craft and acquire the Flatshot Bow
Craft and acquire the Recurve Bow
Craft and acquire the Composite Bow
Acquire the Sapphire Bow.
Acquire the Repeating Crossbow
Acquire the Sapphire Staff
Collect 5 Shell Coins.
Collect 15 Shell Coins.
Collect 30 Shell Coins.
Acquire the Level 1 Arrow Pouch.
Acquire the Level 2 Arrow Pouch.
Acquire the Level 3 Arrow Pouch.
Craft and acquire the Level 1 Greaves.
Craft and acquire the Level 2 Greaves.
Craft and acquire the Level 3 Greaves.
Acquire the Sapphire Greaves.
Craft and acquire the Level 1 Bracers.
Craft and acquire the Level 2 Bracers.
Craft and acquire the Level 3 Bracers.
Acquire the Sapphire Bracers.
Craft and acquire the Level 1 Armband
Craft and acquire the Level 2 Armband
Craft and acquire the Level 3 Armband
Acquire the Sapphire Armband.
Acquire all the full Sapphire Set.
Meet the fatty in the hidden level.
Defeat the Barbarian King in the final showdown.
Survive for 30 minutes in Endless Mode.
Craft and acquire the Level 1 Food Pouch
Craft and acquire the Level 2 Food Pouch
Craft and acquire the Level 3 Food Pouch