Forest Temple route from the entrance to Phantom Ganon
Find the early keys, restore the four Poe flames and line up the basement torch.
Bring the Hookshot from Dampé’s grave to the Sacred Forest Meadow. Grapple up to the entrance. Before the first locked door, climb the vines and cross the branches for a key. Inside, the four empty torch stands mark your progress.
Before the bow
Go straight across the torch hall and defeat the two Stalfos for a key. Back in the hall, clear the northwest blue block with the Song of Time. Climb the courtyard vines and grapple across to the switch that drains the well. Collect the key below. With two keys in hand, open the west wing and push the blocks along the painted arrows. Follow the twisted corridor and go down the painting stairs to the Stalfos guarding the Fairy Bow.
The paintings and the Boss Key
Return up the stairs. Shoot the occupied paintings, then fight the Poe at the bottom. Backtrack to the eye above the entrance to the twisted corridor. Shoot it to straighten the room and reach the Boss Key. Drop through the hole and take the outside ledge’s right-hand door. Defeat the Floormaster and its pieces for another key. Twist the corridor again to reach the bow room and the second painting staircase beyond it.
The blue hallway and the last two flames
Past the second painting Poe, light the torch with the switch and shoot through the flame into the frozen eye. Drop through the newly aligned opening. If you are investigating the glow beside the ladder, see the warm-light clue. Beyond the falling ceiling, shoot the Poe picture and assemble the matching blocks. Fight the third Poe, then return to the lobby. Of the four purple copies, shoot the one that spins.
The lift and Phantom Ganon
Ride the lift below the four flames. Push the basement wall grips until you reach the torch switch. Rotate again to align the flame with the frozen eye. Fire through the flame, then hit the thawed eye. In the boss room, watch the paintings for the rider who actually emerges and shoot him. When the fight moves into the room, return his energy shots with your sword, then close in while he is stunned.
Walkthrough references
Nintendo Life’s Switch 2 Forest Temple guide · GameTidings’ Poe and boss walkthrough