A Monument to All Your Sins

A Monument to All Your Sins is a Campaign Achievement in Halo: Reach. This achievement is awarded when a player completes every campaign mission in Halo: Reach on Legendary solo. It is represented by a Legendary symbol with a human skull rather than the traditional Sangheili skull.

Trivia

 * The achievement's name is derived from a quote from the Gravemind; "I? I am a monument to all your sins." 
 * Cortana also says this line in the Halo 3 level, while under the influence of the Gravemind.


 * This achievement has somewhat the same icon as the achievement from Halo 2 Vista: Hired Gun