Well, like the title says, I wonder if there's is anyone with a really old CS2D that never got deleted or lost, if that's the case I would love to get his Maps, GFX and SFX folder.
Old in this context means 10+ years old.
There is a lot of lost maps, quite popular ones, that never got uploaded, like most of Unknown Soldier ones.
If anything, I can give you some assets of GFX and SFX from other games (not cs2d files) like Door Kickers, Cortex Command, Notrium,... - which have 2D elements, pixel and some arcade style assets.