Overview
Just a guide which makes CS style movement
1) Create a file ruleset_csmovement.cfg in directory game
2) Copy the text and paste it in ruleset_csmovement.cfg:
gconst_playeronground_speed 260
gconst_playeronground_friction 5
gconst_playeronground_acceleration 1600
gconst_playerinair_aircontrol 0
gconst_playerinair_bunny_accelerate 1500
gconst_playerinair_bunny_wishspeed 30
gconst_playerinair_acceleration 0
gconst_double_jump_velocity 0
gconst_world_gravity 800