These are 2 unique items found in Tower of Fortune 2. Acquiring them also unlocks their special achievements.
Holy Barrier (shield) is obtained after acquiring 10 Mythril; the man who forges in camp will make it for you.
Doom Blade (sword) is acquired by reaching the Black Halo and wishing for it. If you defeat the final boss (twice...) she will grant you your wish of having the greatest sword!