PK？ Battlefield engineering is necessary, so grenades are the most practical regardless of catching people or even skills. After all, FM can improve the ring forging a little bit. Finally, you can wear one or two top-class equipment, jewelry and special accessories, depending on your personal preferences. If you have money, you can try it.

Except for FM, which is the most difficult to rise, it is ok in the early stage and good in the later stage. Grind it slowly ..