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ON-icon-achievement-Mechanical Archeology.png Mechanical Archeology
Type Lost Depths Achievements
Points 10
Needed for
Complete side content in Graven Deep by finding and defeating all three side bosses.

Mechanical Archeology is awarded for defeating all three secret bosses in Graven Deep on any difficulty.

  • Mzugru, Security Drone - found in the Security Depot, accessible via remote chute at the end of a side path going right before Euphotic Gatekeeper's arena. It is also protected by a puzzle mechanic: four control knobs that need to be operated in correct order; using correct knob "connects" it to the boss' confinement, while using wrong knob resets the puzzle.
  • Xzyviian, Defense Crawler - accessible through laser-protected corridor in the Dwarven Station. Players must pass through the obstacle course without triggering laser beams (touching them resets player position to the last safe spot).
  • Chralzak, Sphere 9402-A - accessible through a room with electrified hexagonal tiles puzzle in Tempest Observatory. Six levers at the room entry switch some tiles on/off (standing near any switch and looking in its direction will highlight the tiles it is connected to), allowing to create a safe path with the correct combination. Stepping on an electrified tile immediately resets player position, so it can't be rushed through.

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