5 Legacy Points   |   10 Legacy Points   |   25 Legacy Points

These achievements are unlocked for killing Rakghoul Behemoth once, ten times, and twenty-five times  in [MASTER] difficulty. The activity needed to complete these is:

[MASTER] Flashpoint: Kaon Under Siege

5 Legacy Points   |   10 Legacy Points   |   25 Legacy Points

These achievements are unlocked for destroying KR-82 Expulser once, ten times, and twenty-five times  in [MASTER] difficulty. The activity needed to complete these is:

Quarantine Breach

5 Legacy Points   |   10 Legacy Points   |   25 Legacy Points

These achievements are unlocked for killing Commander Lk'Graagth once, ten times, and twenty-five times  in [MASTER] difficulty. The activity needed to complete these is:

[MASTER] Flashpoint: Kaon Under Siege

10 Legacy Points   |   25 Legacy Points   |   50 Legacy Points

Grants Item: Trophy: Commander Lk'Graagth (Master) on completion

These achievements are unlocked for  for defeating the three required bosses once, ten times, and twenty-five times in [MASTER] difficulty. The achievements needed to complete these are:

Defeat Rakghoul Behemoth (Master)   |   Advanced: Defeat Rakghoul Behemoth (Master)   |   Elite: Defeat Rakghoul Behemoth (Master)   |   Defeat KR-82 Expulser (Master)

Advanced: Defeat KR-82 Expulser (Master)   |   Elite: Defeat KR-82 Expulser (Master)   |   Defeat Commander Lk'Graagth (Master)

Advanced: Defeat Commander Lk'Graagth (Master)   |   Elite: Defeat Commander Lk'Graagth (Master)