Needle cannon

The Heavy Needler is first seen in Halo 2 on the level "Sacred Icon." As Tartarus explains to you how to take down a Sentinel enforcer. If you stay alive long enough the Enforcer will start to shoot out the Heavy Needlers. The Heavy Needlers on an Enforcer shoots out blood red needles instead of the weaker deep purple variety that the Covenant use. These needles also tend to be larger than the Covenant needles that are shot out the lesser Needler. The Heavy Needlers needles do not explode but still pack quite a punch and can take down the Arbiter quickly, but they do not home on targets. It instead sprays the area with it.