运行游戏后面增加-devmode参数
F4 - Toggle No Clip Mode
F2 - Move to Next Checkpoint
o - Gives 999 ammo
p - Gives all weapons
F9 - Save Current Position
F10 - Load Current Position
F11 - Toggle Extra Information
F1 - Toggles FirstPerson/ThirdPerson Camera Modes
BackSpace - Toggle GodMode
= - increase speed
- - decrease speed
F5 - Default Speed