Console Cheats

Make sure the Developer Console is enabled in options, and assign a proper key to open the console. Open the developer console in-game and note the following commands:

Portals_ResizeAll - Changes portal sizes to what you specify (Replace and with half of the width and length you want on the portals)

sv_portal_placement_never_bump 1 - Makes sure your portals can be placed in any way you shoot them, even inside eachother

sv_portal_placement_never_fail 1 - You can place portals wherever you want

sv_portal_placement_on_paint 1 - Makes your portals placable on paint

portal2_portal_width XXX - Specify the width you want your portals to be, where XXX is a numerical value

portal2_square_portals - Make all portals entirely circle-shaped (Not long)

impulse 101 - Gives you all weapons (Including Half-Life 2 weapons)

Buddha - Makes you immortal (You never go below 1 health)

God - Makes you immortal (Your health is static)

noclip - Ability to fly, even through walls (Type again to toggle)

ent_create - Creates any entity you specify, where your crosshair is aiming

ent_create_paint_bomb_erase - Creates paint-erasing fluid (The blank kind of paint that removes other kinds) where you're aiming

ent_create_paint_bomb_jump - Creates Blue Gel paint, the jumpable type

ent_create_paint_bomb_portal - Creates White Gel paint, that allows you to place portals on it

ent_create_paint_bomb_speed - Creates Red Gel paint, allowing you to run at high speeds on it

ent_create_portal_companion_cube - Creates a Companion Cube

ent_create_portal_reflector_cube - Creates a Reflector Cube (For lasers)

ent_create_portal_weighted_antique - Creates ???

ent_create_portal_weighted_cube - Creates ???

ent_create_portal_weighted_sphere - Creates ???

sv_gravity XXX - Sets the gravity amount, where XXX is a numerical valueThere are more 'ent' commands (aka entity commands) and they are the same as those for Half-Life 2 and other Source games. To see what you can spawn using ent_create, type listmodels in console.