Weapon challenges: Collect all of the Titan Tablets, Priest's Amulets, and Emperor's Coins. Deposit all of them in the appropriate pillar to make a giant stone tablet appear in the middle of Elysiam. Activate the tablet to start the weapon challenges. Annihilation weapon: Win Axe Challenge 4 in the weapon challenges. Invictus Gladius weapon: Win Sword Challenge 4 in the weapon challenges. Olympus Cleavers: Win Gauntlet Challenge 4 in the weapon challenges.