Insane mode:Complete the game to unlock Insane difficulty.Bonus multiplayer skins:Unlock the following skins by performing the corresponding tasks in multiplayer mode:SKIN – HOW TO UNLOCKAnthony Carmine – Complete Act 1 and an achievement from Act 1 in the original Gears Of War.Dizzy Wallin – Complete Act 1 in single player mode.Flame Grenadier -? Complete Act 4 in single player mode.Kantus – Complete Act 2 in single player mode.Lt. Minh Young Kim – Find 10 COG tags in the original Gears Of War. Unlock the “Time To Remember” achivement.RAAM – Defeat RAAM in the original Gears Of War. Unlock the “A Dish Best Served Cold” from it.Skorge – Complete Act 5 in single player mode.Tai Kaliso – Complete Act 3 in single player mode.Golden Weapons:Unlock the following golden weapons by completing the corresponding tasks:GOLDEN WEAPON – HOW TO UNLOCKGolden Gnasher (Shotgun) – Earn the highest rank possible in an online multiplayer match.Golden Snub pistol – Earn 1000 Achievement points and get to rank 5 in online multiplayer match.Gamerpics:Unlock the following gamerpics by performing the corresponding tasks:GAMERPIC – HOW TO UNLOCKMarcus #1 gamerpic – Complete campaign mode on insane difficulty.Marcus #2 gamerpic – Get the “Seriously 2.0” achievement.Marcus and Dom gamerpic – Get the “Friends with Benefits” achievement.Collector