Crysis free weapons server mod, strength mod, speed mod, and invisibility extender. Type the following commands into the server console or (~) if you're hosting the game. Play around with different values, and have some fun!
g_pp_scale_price = 0.01
This sets the prices very low, but not to 0. You can set the prices to 0, but this will cause weapon sets not to load properly (because they use the prices, for some reason).
g_suitSpeedEnergyConsumptionMultiplayer = 0.01
This makes your suit's speed mode last MUCH longer.
g_suitSpeedMultMultiplayer = 10
This makes your suit MUCH faster
g_suitCloakEnergyDrainAdjuster = 0.05
This makes the suits invisibility mode last a lot longer
cl_strengthscale = 150
Makes punching cars/tanks/trucks a whole heck of a lot of fun. Don't let any of the opposing team punch you!