Imperial Navy Breachers, hardened voidfarers equipped for close-quarters boarding actions Farstalker Kinbands, cunning Kroot mercenaries accompanied by savage pets
Kasrkin, elite veteran commandos of Cadia, well-armoured and armed to the teeth
Hierotek Circles, obsessive Necron Crypteks and their loyal cybernetic guardians
Hands of the Archon, covert Drukhari agents jockeying for prestige on clandestine missions
Exaction Squads, specialists of the Adeptus Arbites, trained for subjugation with extreme prejudice
Hearthkyn Salvagers, heavily-armed prospectors, scouting out plunder for the Leagues of Votann
Fellgor Ravagers, furious Beastmen raiders who seek to prove their strength to the Ruinous Powers
Inquisitorial Agents, versatile acolytes and requisitioned allies who put heretics to the torch
Chaos Cults, warpsworn fanatics that mutate into new and terrible forms

- Rules for the walls and hatches of Killzone: Gallowdark, with Close Quarters rules for fighting in cramped conditions
- Additional terrain rules for four supplementary killzones Into the Dark, Shadowvaults, Soulshackle, and Gallowfall

- Nine Critical Operations missions for Gallowdark games, offering balanced clashes with symmetrical objectives
- Four Shadow Operations mission packs Into the Dark, Shadowvaults, Soulshackle, and Gallowfall each including nine themed missions, for a total of 36
- Gallowdark Expedition campaign rules, allowing you to link your games together as you explore and salvage the space hulk

You'll need a copy of Kill Team Core Book to make use of this supplement.