With her it’s a hit and miss depending on the Monster you’re fighting.
Best bet is is just float above or stay directly behind them (with your fellow Hunters being on the other side as they get pummeled).
Stay at the very edge of the Lance’s range of possible. The thing with Lennox is that she and Blitzkov demand the most attention out of all the Assaults and can probably provide better damage than any other Assault in the long run.
Also need to make sure to only use your Thunderstrike if you’ve lost your stacks and the Monster is moving away or if you’re about to be pounced (so they pounce right into your strike which can save a match if you’re the last one).
Of course since it seems that they reduced the damage the Lance provided (lul wut?) and increased the AA Gun’s damage while making it more likely to deal damage to the Monster… maybe just sitting back and going PewPew all day isn’t such a bad idea especially vs a Wraith who hits everything.
But with all that said… why even pick Lennox? Blitzkov, Hyde and even Parnell (he’s shined a bit in my eyes lately) are better more consistent choices.
Hyde is super easy to use.
Blitzkov Mines and Tesla Gun damage are supreme.
Parnell has the A-Game when chasing and hurting the Monster at the same time.
Hell even OG Markov would probably be a better choice… and he kinda sucks really in the “Damage when you need it!” Department. At least he kills those pesky crabs and Reavers in a fancy lightshow and not inhumanely like Hyde does… that sick but loveable bastard.