Early game · first 8 minutes
Check the ground for Hex-Lined Snap Trap before getting closer. You can shoot the trap to destroy it. Avoid fighting with a wall behind you; Gutshot can knock you into it and stun you.
Rat King vs Venator
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Mid game · Walkers
Move away from teammates if Consecrating Grenade sets you on fire. The burn also damages nearby allies, and its healing reduction makes a long trade harder to survive.
Late game · Patron
Use solid cover when Venator loads Ira Domini. Wait for him to fire the stakes or for the active timer to expire before advancing with the banner; the blessed shots can execute low-health targets.