Floodgate has objective gates as well as damage checks. The route must clear the five weapon stockpiles, then the group needs a clean intermission plan for Big M.O.M.M.A.
Route gate: count all five Weapons Stockpiles: Destroy all five Weapons Stockpiles in the opening area before expecting Swampface to be available. Call the remaining count as the group moves so the route does not require a late backtrack.
Opening trash: named kicks beat general CC: Bloodthirsty Cackle, Warp Blood, and dangerous sniper casts are the priority assignments. Keep the group close enough that Surprise Inspection does not pull the inspector away from the stack point.
Big M.O.M.M.A.: kill drones, interrupt, then burst: Defeat the four Darkfuse Mechadrones and interrupt Maximum Distortion before the barrier check. When Jumpstart begins, the boss takes increased damage but the group takes heavy damage - line up burst and a healing cooldown together.
These are execution priorities, not a fixed pull-count route. Verify weekly tuning, affixes, and your tank's route before the key, then use the source and current videos for difficulty-specific details.
Kick Harpoon and Surveying Beam, and move from Seaforium Charge. These are simple individual actions that become lethal only when the group is spread or the tank starts the next pull too early.
