Every step in order, no explanations. Open the full manual when a step needs detail.
Power, part one — flood the funnels
! Grab a bucket before you start this. There are buckets in Spawn, Lab A, Lab B near the blue and green water, and in the Bunker, so more than one player can carry one.
Power, part two — the underwater lockdown
! You will drown if you ignore your air. Shoot spores for air or swim up into the air pockets. Do not start this on a round you cannot handle.
Power, part three — the switch
Pack-a-Punch — part 1
Pack-a-Punch — part 2
Pack-a-Punch — part 3
Pack-a-Punch — drain it
Trials of the Ancients
! Completing all trials is also what enables the lightning strike at the trial area, which you need for the electrified shield, the third gear and the Masamune vial.
Equip the gobblegum before you launch
Prerequisites
Mesmerise the poster
! This is the switch that lets the Skull reveal every other hidden wall on the map, including the Masamune plant spot. Do it before anything else that needs mesmerising.
Open the elevator machinery
Gear 1 — the caves
! You do not actually have to kill the Spider Boss for this — the webbing only needs to be cleared. You will want the fang for the Masamune anyway, so most people do both in one trip.
Gear 2 — shoot down the plane
! Miss and you have to grow another shell from scratch. Grow more than one plant so a miss is not a disaster.
Gear 2 — find where it fell
Gear 3 — electrify the shield
Gear 3 — drop onto the docks
! The drop is purely vertical — you keep no forward momentum, so do not release early. Miss and you fall out of bounds and die instantly, losing your weapons unless you have a Clone plant waiting.
Repair the elevator
Kit check before you descend
The corridor
Boss — the Giant Thrasher
! Only the Masamune advances the fight. Everyone else is on crowd control — keep the Masamune player alive above everything else.
Finish it