Uploaded November 2015 | Updated September 2026, 2 weeks ago

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To unlock the On My Mark achievement, you have to simultaneously assassinate two Elites in Blue Team co-op. This can be done on any difficulty.

■ Achievement Playlist: bit.ly/1NE1w31
■ Subscribe: bit.ly/1LLX8vL
■ Second Channel!: bit.ly/1wmbsUF

Developed by: 343 Industries
Published by: Microsoft Studios