Overall, the perks can be divided on 3 groups: Trash killersĬommando, SWAT, Berserker, Field Medic, Firebug Ranking could have made sense back when the game was released in 2015 or 2016, but in its current state, when literally all perks are shifted towards generalist-playstyle, there is no point in putting currently available perks in certain order (from best to worst or whatever). Commando and SWAT control trash crowds better, while Sharpshooter and Demolitionist are good at disposing large threats.
The game is designed in a way that each perk has its own strengths and weaknesses, e.g.