I know there are other threads with such packages, but none of them i've found unlock every weapon skin and/or characters. So i decided to create my own from the scratch.

In addition 47 weapon skins, 38 COG characters and 27 Locust Characters are available.

http://www.mediafire.com/download.php?sz0gnsvgiq24tl1

In-Game (without any DLC):

Weapon Skins:
Arctic Camo, Blood, Camo, Chrome, Crimson Omen, Deadly Cute, Desert Camo, Desert Digital, Electric, Epic, Flame, Flower, Garish, Gold, Gold Omen, Haze, Imulsion, Infected Omen, Jungle Digital, Liquid, None, Ocean, Oil Slick, Onyx, Plasma, Rainbow, Team Distress, Team Insignia, Team Metal, Team Pulse, Thunderstorm, Tiger Stripe, Tribal, Urban Digital, XBox

COG characters:
Aaron Griffin, Adam Fenix, Anthony Carmine, Anya Stroud, Augustus Cole, Benjamin Carmine, Bernie Mataki, Big Rig Dizzy, Chairman Prescott, Civilian Anya, Classic Baird, Classic Cole, Classic Dom, Classic Marcus, Clayton Carmine, COG Gear, Cole Train, Commando Dom, Damon Baird, Dizzy Wallin, Dominic Santiago, Golden Gear, Jace Stratton, Marcus Fenix, Mechanic Baird, Onyx Guard, Samantha Byrne, Superstar Cole, Unarmored Marcus, Victor Hoffman

Locust Characters:
Beast Rider, Drone, Flame Grenadier, Golden Hunter, Golden Miner, Grenadier, Grenadier Elite, Hunter, Hunter Elite, Kantus, Miner, Myrrah, Savage Drone, Savage Grenadier, Savage Grenadier Elite, Savage Kantus, Savage Theron Guard, Sniper, Spotter, Theron Elite, Theron Guard

with Booster Map Pack or RAAM's Shadow installed:

Weapon Skins:
Chocolate, Impossible

COG characters:
Alicia Valera, Michael Barrick, Minh, Tai Kaliso, Young Kim

Locust Characters:
General Raam, Theron Elite (slightly different skin)

with Fenix Rising Map Pack installed:

Weapon Skins:
RE-UP 1, RE-UP 2, RE-UP 3

COG characters:
Cole Train (LE), Recruit Clayton Carmine

Locust Characters:
Savage Kantus (LE), Savage Marauder

with Forces of Nature installed:

Weapon Skins:
FL4K, Hype, Ivory, Major League, Midnight, Ultra Violet, Vixen

COG characters:
Commando Dom (LE), Mechanic Baird (LE)

Locust Characters:
Savage Grenadier (LE), Savage Hunter