Deep Inside

Half Life Alyx addon by nyon & 9x19 mm quakemaker
It has it all - zombies, Head Crabs, jeff, combine and more.
And a finale battle is quite good.

https://steamcommunity.com/app/546560/workshop/

https://cw3host.com

https://cw3webdesign.com

https://www.facebook.com/cw3host