In Strange Brigade, notwithstanding the numerous collectibles, there are likewise some different trophies/accomplishments that you can open. In the event that you need to play the Platinum Trophy or 100%, you should likewise open achievement in Strange Brigade.
These Are My Fighting Trousers
Skirmish kill 5 adversaries in 30 seconds
An outline of all Strange Brigade PS4 trophies, you can discover here
Melee 5 enemies in 30 sec
The fastest and easiest way is at the beginning of the mission “Forsaken City“. There are 5 enemies already on the ground and you just have to press the button.