Star Wars: Knights of the Old Republic II – The Sith Lords achievements

Reduce a companion's Influence to zero.

Break Hanharr's spirit

Acquire all Dark Side Powers.

Deduce G0-T0's identity

Change your mind about siding with the Settlers at Khoonda

Acquire all Light Side Powers

Learn how to kill Jedi from HK-47

Have your character replace any of the Sith Lords on the main menu screen.

Kill all the Jedi masters

Complete the game on the Dark Side

Install HK-47's unique module

Recruit Hanharr