HBK-4P This particular Hunchback is not supposed to hit other parts of a mech but the legs. This mech is also used to chase lights and hit them in their back or legs. An efficient leg and back killer, this mech is really heat efficient and if combined with mech efficiencies, would make and excellent alpha striker, even if on hot maps. The thing I like about this mech is that its most expensive component is its STD 260 engine and it only requires one upgrade, which is the double heat sinks upgrade. If the speed tweak efficiency is unlocked, this mech can be used to hunt down lights like a commando or a raven (jenners and spiders are too fast) which threaten the boats on your team. If used against slower assaults, especially stalkers and atlases who are without support, this mech can effectively circle the target without getting too damaged.
Its a hit and run mech, and no I don't use AMS much because I know where to effectively hide from LRMs on most maps.