Gears 2 unlock the corresponding skin

Successfully complete the indicated task to unlock the corresponding skin in Multiplayer mode.
Anthony Carmine
Successfully complete Act 1 in the original Gears Of War.
Dizzy Wallin
Successfully complete Act 1 in Single Player mode.
Flame Grenadier
Successfully complete Act 4 in Single Player mode.
Kantus
Successfully complete Act 2 in Single Player mode.
Lt. Minh Young Kim
Find 10 COG tags in the original Gears Of War.
RAAM
Defeat RAAM in the original Gears Of War.
Skorge
Successfully complete Act 5 in Single Player mode.
Tai Kaliso
Successfully complete Act 3 in Single Player mode.