Full list of all 12 Shadow Assault Tenchu achievements worth 200 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Xbox 360.
Finish Mission 1 without being spotted by anyone except Echigoya.
Finish Mission 28 without being discovered by anyone.
Finish Mission 8 with at least 90 seconds left.
Finish Mission 21 with at least 60 seconds left.
Finish Mission 11 without taking any damage.
Finish Mission 26 without taking any damage.
Pull off a 15-hit combo.(Solo Play)
Pull off a 20-hit combo.(Solo Play)
Pull off a 25-hit combo.(Solo Play)
Unlock all available characters.