Beastmaster of Hutta

Completing Beastmaster of Hutta achievement:

• Akk Dog
• Xuuva
• Chemilizard

Beastmaster of Ord Mantell

Completing Beastmaster of Ord Mantell achievement:

• Razoronn
• Gapillian Grazer
• Savrip

Beastmaster of Tython

Completing Beastmaster of Tython achievement:

• Uxibeast
• Tythonian War Droid
• Guid
• Horranth
• Wingmaw (currently bugged, the codex entry isn't granted; obtainable on Balmorra)
• Manka cat

Beastmaster of Korriban

Completing Beastmaster of Korriban achievement:

• K'lor'slug
• Tuk'ata
• Shyrack

Loremaster of Dromund Kaas

Completing Loremaster of Dromund Kaas achievement

1. codex entry: Lore: The Spires of Victory (The Spires of Victory lore object)
2. codex entry: Lore: Monument to Lord Ergast (Monument to Lord Ergast lore object)
3. codex entry: Lore: The Obliteration of Kressh (Statue of Kressh lore object)
4. codex entry: Lore: Sithspawn (Shadow Spawn mission)

Loremaster [Coruscant]

Completing Loremaster of Coruscant achievement:

1. codex entry: Lore: The Sacking of Coruscant (mission Crisis in the Galactic City)
2. codex entry: Lore: Republic Government (Republic Government lore object)
3. codex entry: Lore: Reconstruction of Coruscant (Reconstruction of Coruscant lore object)
4. codex entry: Lore: History of Coruscant (History of Coruscant lore object)

Dromund Kaas datacrons

Unlocking datacrons on Dromund Kaas

1. Mastery datacron (red), codex entry "Galactic History 19: The Pius dea Crusades"
2. Presence datacron (yellow), codex entry "Galactic History 21: The Birth of the Mandalorians"
3. Endurance datacron (green), codex entry "Galactic History 20: Chancellor Blotus"
4. Mastery datacron (orange), codex entry "Galactic History 22: The Second great Schizm"
5. Yellow Matrix Shard, codex entry "Galactic History 18: The Hutt Cataclysms"