Considering this trophy is really situational heres a few tips that may help!
-An obvious tip but make sure the rage meter for wolverine is at 100 to deal maximum damage, otherwise you may not KO one of the three youve attacked due to them having high health.
-i'd recommend picking wolverine when having groot on your team this is because the main issue with this trophy is trying to get three people in the same area, however if you coordinate with groot ultimate , then you can use wolverines ult alongside it.
-Preferably should have a healer on the team, preferably mantis so she can give you a dmg boost when using wolverines ultimate.