Destiny 2 Lightfall campaign Final Boss solo Legend
Hunter subclass
Calus final boss fight

Best strat:
melt Calus' health to like 20%
and then kill the 2 Tormentors. After the 2 Tormentors have been killed, you collect ammo and charge super. Then you can kill off Calus' remaining health and once you enter phase 2; you use witherhoard to kill him by sticking it to him and running in circles entire time.