In Metroid, the gauntlet is a short corridor identical to five other hallway rooms in Kraid's Lair. The repetitive appearance of this room is likely due to memory limitations. The corridor has a partially low-hanging ceiling, three acid pits and two Air Holes in the floor, and three pillars in the ceiling and floor. It is one of several optional paths Samus can take to reach Kraid.
In Zero Mission, this room's appearance has been changed entirely with the increased memory size offered by the Game Boy Advance. It is now a pit with steep ledges leading to two doors on both sides. Samus can enter this room from either of two shafts after the ancient Chozo machine is activated, but visiting it is optional. At the base of the pit are three Sidehoppers, which can be ignored but may pose a nuisance. Near the right entrance is a walkway of Pit Blocks, next to a solid platform with a zip line sensor. It is easy to distinguish the fake platforms from solid as the fake platforms are constructed out of grid-like blocks.
Samus must climb up to the solid platform using two smaller ones directly above the pit, and shoot or Bomb the sensor. She can then quickly jump up to the zip line rail and ride it to the left. It will bring her over three midair pillars of collapsing blocks, between which is a Missile Tank. To collect it, Samus must simply disengage from the zip line when she passes over the blocks and fall into it. She will then fall into the pit below and be able to leave.
- Missile Tank (Zero Mission)
- See above.
- 105 missile tank (pg. 50)
- "The Missile Tank in the large room left of center is surrounded by collapsing blocks. Climb up to the red light in the center of the room and roll into a ball, then create two bombs in quick succession. The first blast will call the carrier. The second will pop you up to the device while it slides by."