28. Hammer of Dawn
Gears of War series
In most situations, the Hammer of Dawn is totally useless. Get it outside with clear skies and a satellite overhead, though, and it'll cause molten death to pour down from the heavens like a god's toxic cleaning solution dripping down from his giant sky-toilet. Briefly targeting an enemy is one thing, but when they start to run away and you realize you can drag the satellite beam across the ground, you'll never want to use another weapon again.