How to go in Thirdperson in Half Life
First have to open the game directory by pressing the the colon key next to the 1 key
then the console menu will pop up and in that menu you wil type
thirdperson
The in game camera will turn to the side of Gordon Freeman (like a 2-D platformer),
This makes it impossible to play. The 90 degree camera can be fixed by writing this.
cam_idealyaw 360 or 0
I believe this can be done in multiplayer, but thats if anyone actually plays Half Life multiplayer anymore.
This is another way to go in thirdperson using sv cheats 1.
sv_cheats 1
chase_active 1
Then to go back into firstperson type
firstperson
This works for both ways
Thanks for reading