The Inverted Spire is a Strike mission in Destiny 2.
Investigate the Cabal
Defeat All Hostiles
Access Conflux
Press Forward
Traverse Deeper
Eliminate The Vex
Approach the drilling site
Eliminate Drill Site Security
Board the Cabal Drill
Reorient the transit system
Repel all attackers
Cross the dig site
Get clear of the drill
Investigate the dig site
Defeat the Modular Mind
Inverted Spire Video Walkthrough