Remove NPC – ent_remove (point to the entity you want to remove).
Summon or Teleport NPC – ent_teleport npc_name (point with your crosshair where you want to spawn it).
Changemap or Changelevel – map MapId (check all the ids below).
Get item, weapon or ammo – give ItemOrWeaponid (check all the ids below).
3rd person perspective – chase_active 1.
1st method: Right click on Black Mesa in your library > Properties > Set Launch Options > Type: -console > Launch the game > Once the game is loaded Type: bind p toggleconsoleĢnd method: In Game > Keyboard settings > Advanced > Enable Developers Console > Save > In Game > hit tilde (~) > Enter “sv_cheats 1” Black Mesa Console Commands – All Cheats