Starting with Overheat provides a 12% Anomaly Power boost, damages all enemies (+24% dmg) in close range and marks them, displaying enemy nameplates. By displaying their nameplates to the player, Overheat has effectively worked as a sonar to scout for opponents, allowing you to target enemies at a distance and behind cover with your FASER Beam.
The cooldown of Overheat is the shortest (6 sec), which allows the player to weave Overheat between three other skills to maintain the buffs and consume the Burn debuff applied by the FASER Beam.
The final skill in this rotation is Eruption, which does high damage but has a long cooldown. It’s crucial players fill this void with a combination of FASER, Overheat and firing off their weapons.
Effectiveness of the Fire Witch heavily depends on the player’s ability to maximize damage per move/optimal player positioning when attacking, e.g. hitting as many enemies as possible with a single F.A.S.E.R Beam.
Rotation: Twisted Rounds until it ends > Venator's Knife > Time Rift > repeat...
Use an LMG to start and destroy some enemies until Twisted Rounds runs out. Twisted Rounds adds a lot of firepower, and with mods you can have an extra 15% as well as 10% weapon leech, and it'll last for two clips.
Launch a boss or multiple enemies in the air with Time Rift to give yourself a breather or let yourself focus fire on a single enemy without having to worry as much about getting shot yourself. The cooldown is also quick, which helps with survivability.
Then, with your secondary weapon, preferably with Life Leech, use Venator's Knife to slow the enemy for about 10 seconds and mark them, making your first shot deal double damage. Pair this with Time Rift as it’ll suspend those enemies in the air even longer.
Wait for Twisted Rounds to be available again, then repeat the cycle.