Instances require keys - looted in the wild - or from World Bosses or GCW Quartermaster bosses
Instances:
The Avatar Platform- 500,500 Kashyyyk- boss: Lord Cyssc, key: Trando Slavers
Axkva Min Lair- NS Stronghold, Dath- boss: Axkva, key: NS Elders
Exar Kun Tomb- Exar Kun Temple, Yavin- boss: Exar Kun, key: Dark Jedi
IG-88 Arena- Nym’s Stronghold, Lok- boss: IG-88, key: ?
ISD- Echo Base, Hoth- boss: Admiral Sait, key: Imperial Snowtroopers
Sher Kar- Near Tulrus Nesting Grounds, Mustafar, key: Stunted Karlings
Working Droid Factory- 500, 1900, Mustafar, key: Mustafarian Salvage Bandit Leaders
Decrepit Droid Factory- 500, 1900, Mustafar, key: Mustafarian Salvage Bandits
Old Research Facility- POI, Mustafar, key: Mustafarian Phantom Bandits
Hutt ‘Gas Leak’ Bunker - Nal Hutta