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The HRX "Harpoon" is a weapon featured in Crackdown. This weapon is added with the "Getting' Busy" DLC pack. It fires high-velocity harpoons that are very strong and can stick enemies to various objects, which is used to get the "Body Armor" Achievement via attaching 5 gang member bodies to a single-vehicle using this weapon. This seems to be one of the more popular weapons in the game as once the player achieves 4-star weapon skill, the time it takes to lock onto an enemy is almost instant. Once a lock is acquired, firing the weapon will pretty much guarantee a one-shot kill on any enemy, aside from high-value targets.