Reposted from Michaels' comment on his latest WR:

If anyone's interested in the strategy:

The strat revolves around abusing the dps of Construct Form (CF) + Tennis Mod (TM), and stacking as many offensive items as possible. Item stat priority would be: primary atk spd > dmg bonus > secondary atk spd > move spd > crit > the rest

I don't really like getting the crit items (except for maybe Perfect Aim) because their conditions are harder to meet compared to others (certain HP, having to ramp up, only occurring once vs switching forms, being near enemies, etc.)

For chaos items, Wyrmweave Wiring is the EZ choice for its primary/secondary atk spd bonus. You can easily deal with its negative move spd by using Hunter Form (HF) secondary and move spd items. The rest of the chaos items would drain your CF battery too quickly.

While you have no items, Base Form (BF) secondary will help skyrocket CF's dps. The trick is to clump enemies together and then use BF secondary, since it provides a scaling atk spd buff based on the number of enemies stunned. I really enjoy pairing this with HF secondary, not only because of its mobility, but also because it extends the stun radius of BF secondary (BF secondary while dashing).

If you are able to get Base evolution 2, I would add it as a Base Mod on Flame Form (FF). It doesn't really change the gameplay loop, but now you have even more burst damage thanks to FF secondary

The gameplay loop is:

Step 1: Enter room and spawn kill bottom-right sentry

Step 2: Clump enemies up

Step 3: BF secondary and fast swap to CF primary for bonkers dps

Step 4: Repeat Step 2-3, adding HF secondary every now and then

Step 5: Win :^)