As you kill your opponents, you gain Experience. Eventually when you have reached your experience quota, you gain a new Level. This means you can buy Upgrades which give you an advantage over your opponent.

//Type in chat:
rpghelp � t� read more about RPG and RPG upgreids.
rpgmenu � opens menu for buying and selling upgreids and changing settings
rpgrank � shows ur rpgrank (by levels)
rpgtop10 � to see top 10 players (ranked by levels)
rpgrank � - to see rpgrank of other player (where � his name or part of it)

Some max skill's levels have been increased:
Regeneration - 10
Ressuply - 10
LongJump - 10
FireGrenade - 10
IceStab - 10
Medic - 20
Some skills have been removed to prevent RPG mod be overpowered compare to WCS mod and to prevent lags:
Stealth
Impulse
Frost Pistol