48px Pilt:Neutral 15.png Subtraction (10 player) Achievement points::10 Achievement points
Defeat Combat Thaddius in Naxxramas with less than 9 people in 10 player mode.

Subtraction is an end game raid achievement. Completing this achievement is criteria for the meta achievement [Glory of the Raider (10 player)].


Combat Thaddius is located somewhere within Naxxramas.

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