Always be making progress on this. Each one can take some time.

https://www.ufopaedia.org/index.php/Missions_(LWOTC)

• Research Implant
• Build Proving Ground
• Blacksite
  • Will be revealed automatically early on
  • Gets the vial
  • Doom reinforcements after 45 turns
    • This is so long. Take your time.
  • Reduces avatar project by 3
  • Reinforcements spawn as soon as you take the vial
• Skulljack officer
  • unlocks alien encryption
• Research alien encryption
  • unlocks shadow chamber
• Build shadow chamber
• Codex Brail (shadow chamber research)
  • Unlocks psi gate
• Encrypted Data (Shadow Chamber research)
  • Unlocks “skulljack a codex” objective
• Blacksite Vial (Shadow Chamber research)
  • Unlocks Forge
• Complete Psi Gate
  • Unlocks Psionic Gate shadow chamber project
  • 10 person mission
  • You keep corpses, so it’s good to do this before the Forge
  • 175 supplies reward
  • No reinforcement timer
  • May trigger a UFO hunt
  • Reduces avatar project by 3
• Complete Forge
  • Unlocks Recovered Advent Stasis Suit
  • 10 person team
  • Always has a sectopod
  • You do not keep corpses
  • 45 turn doom refinorcement timer
  • Picking up the suit does not trigger reinforcements
  • 225 supplies
  • May trigger a UFO hunt
  • Reduces avatar project by 3
• Skulljack Codex
  • Spawns avatar
  • reduces avatar project by 3
• Recovered Stasis Suit (Shadow Chamber project)
• Upgrade Shadow Chamber ($250, 1 core)
• Psionic Gate (Shadow Chamber project, 80 intel)
• Avatar Autopsy (Shadow Chamber project)
  • only available once all other shadow chamber projects are done