You'll also need a trigger brush on the area you have to touch to end the level.
Tie the brush to a trigger_once (or trigger_multiple)
In the outputs, Make 2 outputs (only 1 if you don't have a fade) with OnStartTouch. For the target entity, choose the point_clientcommand for one, and the env_fade for the other output.
For point_clientcommand, set 'Target Input' to Command, and the parameter to disconnect.
For env_fade, set 'Target Input' to Fade.
Set the delay to whatever you want.
If you used a trigger_multiple, check the 'Fire Only Once' box.
