Operation Darkness

Unlock EX Missions:
Get all of the Valhalla Orders. A specific solider in each stage from
about Episode 13 and later has a Valhalla Order. You can't go back to
collect any that were missed.

Achievements:
Complete the following achievements to award the indicated amount of
Xbox Live Gamerscore points.

M01 Clear (20 gamerscore points): Finish Mission 01.
M02-04 Clear (20 gamerscore points): Finish Mission 02-04.
M05-07 Clear (20 gamerscore points): Finish Mission 05-07.
M08-10 Clear (20 gamerscore points): Finish Mission 08-10.
M11-13 Clear (20 gamerscore points): Finish Mission 11-13.
M14-16 Clear (20 gamerscore points): Finish Mission 14-16.
M17-19 Clear (20 gamerscore points): Finish Mission 17-19.
M20-22 Clear (20 gamerscore points): Finish Mission 20-22.
M23-25 Clear (20 gamerscore points): Finish Mission 23-25.
M26-27 Clear (20 gamerscore points): Finish Mission 26-27.

AR01-03 Clear (20 gamerscore points): Finish Armored Recon Mission 01-03.
AR04-06 Clear (20 gamerscore points): Finish Armored Recon Mission 04-06.
AR07-09 Clear (20 gamerscore points): Finish Armored Recon Mission 07-09.
AR10-12 Clear (20 gamerscore points): Finish Armored Recon Mission 10-12.
AR13-15 Clear (20 gamerscore points): Finish Armored Recon Mission 13-15.

EX01-05 Clear (25 gamerscore points): Finish Extra Mission 01-05.
EX06-10 Clear (25 gamerscore points): Finish Extra Mission 06-10.
EX11-15 Clear (25 gamerscore points): Finish Extra Mission 11-15.
EX16-20 Clear (25 gamerscore points): Finish Extra Mission 16-20.


Secret achievements:

The War Medal (20 gamerscore points): Unknown task.
The Purple Heart (35 gamerscore points): Unknown task.
Africa Star (45 gamerscore points): Unknown task.
Soldier's Medal (65 gamerscore points): Unknown task.
Silver Star (70 gamerscore points): Unknown task.
Distinguished Service Cross (80 gamerscore points): Unknown task.
Military Cross (90 gamerscore points): Unknown task.
Medal of Honor (95 gamerscore points): Unknown task.
Victoria Cross (100 gamerscore points): Unknown task.