- Open console with the ~ key.
- Type: /record playername
- Then go to spectator and spectate them, until you think you have clear enough evidence.
To Stop the recording:
- Type: /stoprecord when finished.
- Exit the game, and upload the demo in C:/Program Files/Wolfenstein - Enemy Territory/nq/demos/playername.dm_84 for noquarter or C:/Program Files/Wolfenstein - Enemy Territory/silent/demos/playername.dm_84 for silent.