I recorded a full walkthrough of Half-Life Source using ray tracing Marty McFly RTGI ReShade shader and AI Upscale mod.
Here is a download link for the latest AI Upscale mod for HL: Source: Moddb.com
And here are the links to the shaders:
Marty McFly RTGI (not available freely to the public yet unfortunately)
A full playlist of the walkthrough is here
Or watch embedded: