Brink Cheats and Tips

Light body type (must level up to unlock) - sprints the fastest, can climb over objects just above head height, has the lowest amount of health, and has a limited weapon selection due to upper body strength. The trade off is light body types can perform wall hops, which (if timed right) can DOUBLE the distance you can jump. Recommended for players who can perform "lightning runs" (get to the objective fast and get out fast)
Medium body type (default body type) - has a well balanced ratio of sprint speed to health, can climb over objects at head height, and has access to almost all weapons. Recommended for players who like to do a little bit of everything.
Heavy body type (must level up to unlock) - has the highest amount of health, sprints the slowest, and can only climb over objects at waist height. The trade off is heavy body types hav access to all weapons due to their massive strength and are walking tanks. Recommended for players who like to stand guard and use
The big toys.
I don't remember the exact level that the other body types are unlocked at. However, I do know that you unlock the heavy body type before you unlock the light body type
My psn I.d. Is gord-onfree-man

Soldier - for people who like to handle xplosives and have xtra ammo. You also hav molotov cocktails with this calss.
Engineer - for people who like to build mg nests, auto turrets, plant mines, and boost their fire power
Medic - for people who like poking others with needles and want to boost their health in emergency situations
Operative - for people who like sneak attacks,hacking enemy data bases, and just be a pain in the butt. (I do it all the time) XD hope this helps.
My psn I.d. Is gord-onfree-man

Completer the following challenges to get the corresponding items.
Parkour This 1:
Barnett Light Rifle / Front Grips / Rapid Fire
Parkour This 2:
Belgo Machine Pistol / Silencers
Parkour This 3:
Score on Leaderboard
Escort Duty 1:
High Powered Scopes / Red Dot Sights / Muzzle Brakes
Escort Duty 2:
EZ-Nade Auto Grenade Launcher / Drum Magazines
Escort Duty 3:
Score on Leaderboard
Tower Defense 1:
FRKN-3K Assault Rifle / Underslung Grenade Launcher / Adjusted Iron Sights
Tower Defense 2:
Gotlung Minigun / High-Capacity Magazines
Tower Defense 3:
Score on Leaderboard
Be More Objective 1:
Lobster Grenade Launcher / Ritchie Revolver / Duct-Taped Magazines
Be More Objective 2:
Bulpdaun Submachine Gun / Speed Slings / Speed holsters
Be More Objective 3:
Score on Leaderboard

The following list tells you the required amount of Experience Points needed to reach the corresponding level.
Rank 1
Level 1 - 1,000 Experience Points
Level 2 - 2,000 Experience Points
Level 3 - 3,000 Experience Points
Level 4 - 4,000 Experience Points

Rank 2
Level 5 - 5,250 Experience Points
Level 6 - 6,500 Experience Points
Level 7 - 7,750 Experience Points
Level 8 - 9,000 Experience Points
Level 9 - 10,250 Experience Points

Rank 3
Level 10 - 12,000 Experience Points
Level 11 - 13,750 Experience Points
Level 12 - 15,500 Experience Points
Level 13 - 17,250 Experience Points
Level 14 - 19,000 Experience Points

Rank 4
Level 15 - 21,750 Experience Points
Level 16 - 24,500 Experience Points
Level 17 - 27,250 Experience Points
Level 18 - 30,000 Experience Points
Level 19 - 32,750 Experience Points

Rank 5
Level 20 - 37,500 Experience Points

The following is a list of weapons that can be found in the game.
Kolt Pistol
Sea Eagle Pistol
Hockler Machine Pistol
Belgo Machine Pistol
Caesar Revolver
Ritchie Revolver
Kross SMG
Hjammerdeim Shotgun
Lobster GL
Unknown LMG
EZ-Nade AGL
Gottlung Mini-gun
Drognav Long Rifle
Galactic SMG
Tampa SMG
Bulpdaun SMG
CARB-9 SMG
Mossington Shotgun
Molotov Cocktail
Maximus Machinegun
Gerund Assault Rifle
Rhett Assault Rifle
FRKN-3K Assault Rifle
Rokstedi Assault Rifle
Barrett Long Rifle
Euston Assault Rifle
Caesar Revolver (with the Psycho Pack pre-order bonus)
Hockler Machine Pistol (with the Spec Ops Pack pre-order bonus)

When you reach the indicated level the corresponding customization effect will become available.
Resistance Face Gear
The Dude - Level 0
The Firestarter - Level 6
The Hockey Mask - Level 9
The Goggles - Level 11
The Sweat - Level 12
The Cannibal - Level 13
The Voice - Level 15
The Fortress - Level 18
The Anger - Level 20
The Grin - Preorder Bonus

Security Face Gear
The Bug - Level 1
The Unit - Level 2
The Shield - Level 4
The Look - Level 11
The Cop Glasses - Level 12
The Eel - Level 13
The Bouncer - Level 15
The Jesse - Level 17
The Freak - Level 20
The Sloani - Preorder Bonus
The Good Cop - Level 0

Resistance Face Paint
White Skull Face Paint - Level 0
Headshot Face Paint - Level 4
Hand Print Face Paint - Level 9
Tribal Face Paint - Level 12
Voodoo Face Paint - Level 16
Clown Face Paint - Level 19

Security Face Paint
Adhesive Bandages - Level 0
War Paint - Level 4
Broken Nose - Level 9
Barbarian Face Paint - Level 12
Camo Face Paint - Level 16
Dirty Face - Level 19

Facial Hair
The Stubble - Level 0
The Chinny/The Beardy/The Goatee/The Plait/The P.I. - Level 8
The Beatnik/The Chops/The Wrestler/The Trimmed/The Wolf - Level 16
The Disgrace (Resistance Only) - Level 17

Resistance Hair and Head Gear
The Buzz Cut - Level 0
The Receding - Level 0
The Cropped - Level 0
The Dreadlocks - Level 0
The Tighten Up - Level 0
The G - Level 2
The Mohawk - Level 3
The Corn Rows - Level 3
The Fin - Level 3
The Tendril Afro - Level 3
The Scruff - Level 4
The Safety - Level 10
The Rasta - Level 10
The Stripes - Level 10
The Natural - Level 10
The Dude - Level 11
The Dreads - Level 14
The Spiky Big Hair - Level 14
The Spiky Hair - Level 14
The Shemagh - Level 17
The Spikes - Level 17
The Fortress - Level 18
DOOM Bandana - Special
Fallout Bandana - Special

Security Hair and Head Gear
The Tank - Level 0
The Cropped - Level 0
The Buzz Cut - Level 0
The Receding - Level 0
The Dreadlocks - Level 0
The Tighten Up - Level 0
The Flat Top - Level 3
The Corn Rows - Level 3
The Fin - Level 3
The Tendril Afro - Level 3
The Jesse - Level 6
The Natural - Level 10
The Ponytail - Level 10
The Military Mohawk - Level 10
The Beret - Level 12
The Dreads and Cap - Level 14
The Fashion - Level 14
The Cap - Level 17
The Bomb - Level 18
UAC Beanie Cap - Special
Vault-Tec Beanie Cap - Special

Tattoos and Scars
These are ALL unlocked from the beginning and are permanent once placed on your character.

Body Type
Heavy - Level 5
Medium - Level 0
Light - Level 7

Resistance Shirts
Tattered Shirt - Level 0
Forearm Bandages - Level 0
Vest - Level 0
Tattered Vest - Level 10
String Vest - Level 13
Long-Sleeve Shirt - Level 19
Screaming Soul Shirt - Special
Vault Boy Shirt - Special

Security Shirts ..

Check out the video below to learn about character customization in Brink.
http://www.youtube.com/watch?v=7KWlDCJGvsI