Capcom's Resident Evil: Operation Raccoon City isn't available until March 20, but some sleuthers may have already found out about the game's post-launch DLC.

Xbox 360 Achievements has uncovered the game's full list of achievements, which includes some that reference the "Echo Six Expansion Pack."

No further information about the expansion pack is given, but it is known that the Echo Six group is on the side of the Spec Ops crew. Operation Raccoon City features both the Umbrella Secret Service (USS) and their counterparts, the Spec Ops team.

For more on the game, check out this latest trailer.

[Thanks to the reader tip from Bryan Sharkey!]