Part 29

Research Heavy Lasers: Unlocks the Shiv Laser project. Completing the Shiv Laser project grants +10 aim to the Shiv and replaces it with a laser weapon if not already plasma.

Research Alien Flight Computer: Unlocks the Stealth Satellite project. Completing the Stealth Satellite project makes Stealth Satellites available, which are less likely to be shot down by escaping UFOs.

Research Elerium: Unlocks the Improve Arc Thrower project. Completing the Improve Arc Thrower project allows Arc Throwers to stun at 6 HP, with increased odds as HP decreases below 6.

Research Archangel Armor: Unlocks the Advanced Flight project. Completing the Advanced Flight project allows units to fly for longer durations.

Research Plasma Pistol: Unlocks the Improve Pistol 3 project. Completing the Improve Pistol 3 project increases pistol damage by 1.

Recover Alien Grenade: Unlocks the Alien Grenade project. Completing the Alien Grenade project replaces all grenades with alien grenades.

Research EMP Cannon: Unlocks the Shiv Repair project. Completing the Shiv Repair project allows MECs and Shivs to be repaired by Arc Throwers.

Research Heavy Plasma: Unlocks the Shiv Plasma project.

Drone Autopsy: Unlocks the Sentinel Drone project and the Drone Capture project. Completing the Sentinel Drone project heals all Shivs for 2 HP per turn. Completing the Drone Capture Project allows Drones to be captured by Arc Throwers.

Muton Autopsy: Unlocks the Ammo Conservation project. Completing the Ammo Conservation project grants all units more ammunition.

Thin Man Autopsy: Unlocks the Improve Medikit project. Completing the Medikit project increases Medikit healing by +2.

Sectopod Autopsy: Unlocks the Advanced Construction project. Completing the Advanced Construction project enables the Rush Construction option, speeding up construction at the expense of money.

Research Experiment Warfare: Unlocks the Tactical Rigging project. Completing the Tactical Rigging project grants all soldiers 2 item slots, with supports able to fit even more uses in their two item slots.

Mechtoid Autopsy: Unlocks the Shaped Armor project and the Advanced Servomotors project. Completing the Shaped Armor project grants +3 HP to all MEC and Shiv armor. Completing the Advanced Servomotors project grants +3 movement to MEC and Shiv.

Research Elerium (second instance): Unlocks the Elerium Jelly project. Completing the Elerium Jelly project grants +3 damage to the MEC flamethrower attack.

Heavy Floater Autopsy: Unlocks the Advanced Repair project. Completing the Advanced Repair project reduces recovery time for SHIVs and aircraft.

Slingshot DLC Mission - Friends in Low Places: After an intro (cutscene (a non-interactive cinematic the game plays automatically)) showing Zhang killing an alien, he becomes a weak hostage. Use standard target extraction (objective) tactics, advancing the VIP (Zhang) only after setting up a kill zone. Expect Thin Men, and potentially Mutons or Chryssalids in later waves (4 total waves). The final wave often contains a Muton or Chryssalid. Zhang joins as a Heavy with high HP and will.

Slingshot DLC Mission - Confounding Light: Standard bomb disposal (objective) tactics apply, though you plant beacons. You have a generous but fixed 10-turn timer. Enemies are primarily Thin Men, with Mutons warping in, potentially to high ground. Plant 4 beacons and have one soldier activate train controls. Killing aliens is heavily recommended. The train cannot be destroyed. This mission precedes a harder one, so avoid casualties. You can delay this mission until you have laser-level weapons.

Slingshot DLC Mission - Gangplank: This mission appears shortly after Confounding Light, as you lured an alien battleship into a trap. Ignoring it means the trap fails. Prioritize disabling/blowing engine nodes, but be aware this triggers reinforcements. Getting close to an engine node can also trigger reinforcements. Reinforcements can include Sectoids, Chryssalids, Thin Men, or Mutons. There is no boss alien. Your team starts outside the battleship. Entering the first door leads to a large room with grav lifts and an engine node, likely with 2-3 Thin Men. Approaching the center triggers reinforcements.