Vigilant Eyes Sanctum walkthrough: all 3 chests

Stay in Pathfinder form and turn back east. The first split pattern hangs at the very top of the chamber above the entrance, and this is the one sightline the room lets you register before it gives you a trial Aniimo. Close the halves and the offset stone door on the axis drops away.

Carry on west to the statue and Twine with the trial Helgon it hands you. Two cards follow: compress visual space with Mobility and break cracked stone walls with Skill 1, then hold Jump to fly across water. A few steps further west the first checkpoint and its save point come on together.

Follow the axis to its west end. The pattern for this gate floats high and well to the south of the doorway it controls, so stand back and let the compression pull the halves together rather than walking up to the door. The stone door opens north and the second checkpoint sits just beyond it.

Past the gate the floor gives way into a flooded trench well below the walkway. Drop in, open the standard chest at the bottom and climb back out before you go on. Falling further than the trench is fatal, so take the descent on the near wall.

Two water jets run down the west wall of the next chamber and two separate pools sit at different heights. Register the pattern from the east side and the pools swap: the near one rises about three and a half units and the far one drops by six. That pairing is what makes the crossing walkable.

Walk into the raft basin to light the third checkpoint. Untwine, aim at one of the three floatable Ancient Large Planks on the west shore and use Manipulate, then Drag it into the crossing lane and Drop it. Do not Throw it, because a thrown plank overshoots the lane.

Line up the far western pattern from the low water edge. Registering it drops the western pool by nearly three units and opens the first of the two basin doors, which is the one on the west side of the channel.

Climb to the upper ledge and register the second pattern across the basin. The eastern pool rises by a little over three units and the north door opens. The water jets here are already running, so there is no pad to press: ride the columns up and use flight to correct the last part of the climb.

Step through onto the balcony to light the fourth checkpoint and its save point. Look west across the chasm and register the bridge pattern from where you stand. A span forms over the drop, and three assist winds along the far lane start pushing anything loose north across it.

A Mechanical Ball waits high at the south end of the lane. Keep the span standing while the winds carry the ball north into the socket at the far end. If the ball ends up in the pit, or the span unmakes under it, the lever on your balcony puts a fresh ball back at the top.

With the socket seated, nine dungeon fans come alive in the corridor north of the lane, stacked in three ranks. The last rank sits at the bottom of a pit eight units below the one before it, so expect to fall before the updraft catches you and lifts you onto the next deck.

The long west deck starts behind the room's only ancient mechanism gate, with its one-shot lever right at the gate post. Throw it once and the gate stays open. The fifth checkpoint is a short walk west along the deck.

Keep west past the stone door to the end of the deck, where three cracked stone walls close off the last stretch. Twine and use Skill 1 on each of them. The chasm below the deck is lethal, so break them from solid ground rather than mid air.

Beyond the broken walls the room ends in an alcove holding the last pattern of this chamber, the furthest west point in the whole Sanctum. Register it and the route through the stone door settles into place for the walk back east.

Come back east along the deck and stop at the short stairs over the chasm. The premium chest sits on the dry landing there, with nothing but a long drop underneath it. Open it before you leave the chamber.

North of the gate the floor drops to the lowest point in the Sanctum. Two fans down there run from the moment the room loads, so the fall is survivable and the updraft carries you back up to the sixth checkpoint and its save point.

This gap takes two registrations rather than one. Two patterns sit side by side about nine units apart at the same height, a left half and a right half, and the broken bridge in the lane below only holds once both have registered. Solve them in either order, taking the shelf on your left first as the site route does.

Drop to the deck with the square console and use it. It drives the lift in the lane twenty units north of you, where the second Mechanical Ball waits on the west shelf and four assist winds push it east across the bridge into the socket. The lever beside the console is the reset if the ball ends up somewhere the winds cannot reach.

Three fans on the east side lift you from the lane onto the high deck, where the seventh checkpoint sits. The pattern for the next gate hangs almost directly overhead, so register it from the deck rather than walking toward the door. The gate it opens is the one that answers to both human and dragon sight.

Through the gate, a separate switch sits beside the last travelling platform. This is a geometry prompt, not an alignment. Use it and ride the platform thirteen units south to the final corridor.

Untwine for the last pattern, because this one is a human sight piece like the very first. Register it from the open square and the eighth and final checkpoint comes on just past it.

The last premium chest sits on the central landing ahead, with a drop beside it that will kill you. Open it and confirm three of three before you take another step east.

The Terminus stands at the far east end of the corridor, the only part of the Sanctum that sits east of the entrance. Use Touch to restore the Vein and clear the room. It resolves the challenge whether or not the chests are open, so nothing is left to come back for.