Impulse

A console command which can do lots of different stuff depending on its numeric parameter.

Here is a list. All those marked as a cheat will require the sv_cheats ConVar being set to 1.

impulse 50

Makes player command (call/send) a squad.

Default key: c

impulse 71

Cheat. Spawns npc_human_grunt.

impulse 81

Cheat. Replaces the current weapon with a set of spheres (models/shadertest/envballs.mdl), each with different reflective surfaces. Useful for checking cubemaps.

impulse 82

Cheat. Spawns the buggy (and possibly something more, as the messages also talk about skulls and seagulls).

impulse 100

Toggles the flashlight on/off for the player.

Default key: f

impulse 101

Commonly used cheat. Gives the player all weapons, extra ammo, extra health and extra energy.

impulse 102

Cheat. Spawns random human gibs.

impulse 103

Cheat. Reports status of the AI under the crosshairs.

impulse 106

Cheat. Prints the classname and targetname of the item under the crosshairs.

impulse 107

Cheat. Prints what texture the crosshairs are pointing at.

impulse 108

Cheat. Debugs the NPC under the crosshairs.

impulse 195

Cheat. Shows the shortest path in the level to the nearest air node.

impulse 196

Cheat. Shows the shortest path in the level to the nearest large node.

impulse 197

Cheat. Shows the shortest path in the level to the nearest human node.

impulse 200

Removes the weapon from the HUD, useful for taking screenshots.

impulse 201

Paints decal.

Default key: t

impulse 202

Plays 'player jingle'.

impulse 202

Cheat. Spatters blood decal.

impulse 203

Cheat. Remove the entity under the crosshairs.