Sacrificial Chamber

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Connecting Rooms
Sacrificial Chamber Tunnel
Undertransit One
Undertransit Two

Sacrificial Chamber is a room located in the lower level of Dark Torvus Bog in Metroid Prime 2: Echoes. It is the room in which the Grapple Guardian boss fight takes place, which rewards the Grapple Beam. Fighting this boss will result in a random chance for unskippable Dark Trooper fights to spawn in Great Bridge, Torvus Grove and Dark Forgotten Bridge, adding random elements to certain 100% routes.

General Information

Room Layer Information
2nd Pass cage lowered
1st Pass
Grapple Attainment
AFTER
BEFORE

The trigger that activates the Grapple Guardian fight is a thin rectangle that covers the entrance to Sacrificial Chamber Tunnel. However, this trigger is not active until Sacrificial Chamber Tunnel's door has been opened. In the Delayed Grapple route for 100%, this is important because of needing to activate this trigger from out of bounds. While wallcrawling, shoot the door to Sacrificial Chamber Tunnel and make sure that the door opens. Once it does, slide along the wall until the trigger is activated. If successful, Samus will automatically be pulled in-bounds, and the Grapple Guardian fight will start.

TODO: Video of Grapple Delay Wallcrawl

Get to Top Level from Bottom

Before the Grapple Guardian fight begins, it is possible to transition to the room from the two Undertransit rooms, making it so that Samus is on the bottom level of the room before she is intended to. The video below demonstrates that there are two ways of getting to the top level of the room from the bottom. Note that there exist two grates that block access, which can be destroyed using Power Bombs.

Roll Jump to Sacrificial Chamber Tunnel

Using a Roll Jump, it is possible to get back to Sacrificial Chamber Tunnel without the Grapple Beam.