Use the following item codes with 'give #' cheat, where # denotes item name.

Code - Effect

ammo_soa - Ammo for Skull of Annihilation
armor - Armor
weapon_battleaxe - Battleaxe
weapon_handaxe - Handaxe
item_iconofcold - Icon of Cold
item_iconofdefense - Icon of Defense
item_iconofmight - Icon of Might
shield - Shield
weapon_soa - Skull of Annihilation
weapon_trimace - Trimace
weapon_warhammer - Warhammer
weapon_warsword - Warsword

Note: These codes work only when you are playing as Warrior.