Have you checked out Tecnobacon's version of DMX 1.3.4 for Narodnaya Soljanka? He's looking for people to mod/improve his mod and he welcomes all efforts. If he can get it stable it could very well be the ultimate stalker mod imo, he's even mentioned some co-op stalking in certain areas. If you don't know where to find it; www.tecnobacon.com
I have briefly tried playing Narodnaya Soljanka and I don't doubt that it is an impressive overhaul. Unfortunately, I don't seem to have the hardware to play it properly. Even after stripping off the graphics improvements I experience very low FPS and studdering, particularly while fighting and this problem is only compounded by unacceptably long load times after I die from the sudden lag.I would be more than happy to beta test for this mod, but its simply unplayable on my hardware. Perhaps sometime after I finish my own projects and upgrade my computer (its about time) I'll offer to lend a hand, but even then its hard for me to recommend a mod compilation that so few people will be able to run.