The Fall Mecha is a gorilla/crab-like mecha from the Rebel Army. Designed to climb up the cliff, it is armed with several weapons such as plasma shots and a laser cannon.
The boss battle starts with the mecha climbing up the waterfall and destroying the bridge. The players reside on the mecha's head. There are two POWs on top of each claw who will give the player some weapons.
The Fall Mecha fires plasma shots from its back as it climbs up the waterfall. Once its head is popped off, it will also intermittently charge and fire its center laser cannon that will go straight up the waterfall.
Two weapon pods occasionally come out of the fall. The pods fire different weapons depending where it faces:
- Facing Upwards: The pod shoots out red/black bombs that fall down at an arc.
- Facing Forwards: The pods fires missiles that travel around the pillars before homing to the players in the arena. The blue-flashing missiles give the player weapons when shot at.
- Facing Downwards: A laser beam is dragged from one side to the other. One pod fires its laser before the other pod does.
Once it is defeated, the Fall Mecha will fire the laser cannon, but instead of killing the player, it will send the player to the entrance of the ruins.
- The Fall Mecha's design and movement is reminiscent to the Seabed Ruins boss from In The Hunt.