A Monument to All Your Sins

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A Monument to All Your Sins
HR Achievement A Monument to All Your Sins.png

HTMCC Achievement AMonumentToAllYourSins Steam.jpg

HTMCC HR Achievement AMonumentToYourAllYourSins.jpg
150 (Halo: Reach)
30 (Halo: The Master Chief Collection) Gamerscore.gif

A Monument to All Your Sins is a Campaign Achievement in Halo: Reach and Halo: The Master Chief Collection. 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.[1]


  • The achievement's name is derived from a quote from the Gravemind: "I? I am a monument to all your sins." [2] This line is also said by Cortana while under the influence of the Gravemind.[3]
  • This achievement has somewhat the same icon as the "Hired Gun" achievement from Halo 2 for Windows Vista.
  • Completing the Campaign on Legendary will also award the "Gods Must Be Strong" Achievement, which does allow for co-operative play.