Enhanced Strength: enhanced with this ability, are unable to be killed by blunt attacks, due to their enhanced muscle durability and bone density. However the rest of there body is normal human level so they can be taken out with a gun of knife but you ah e to hit the right areas

Enhanced Speed: pretty hard to fight against if your normal, the only way is to trick them into a trap, or letting their guard down.

Enhanced durability: there is no way to defeat them if your a normal human unless you have some crazy weapon which is unlikely. The only way you can not lose your life is you either subdue them or exhaust them.