Old School Map

Hey guys, so recently I've been trying to find an old map I used to play on back in like 06, Its called superflip if anybody else remembers? pretty much the biggest skill map to date made by a guy named Hikita.

Well basically as you can tell by the picture I've managed to obtain some sort of map files, however this is where my knowledge of computers and gunz files halts and I'm not sure what to do.

I've tried finding programs to open the .rs files but nothing comes up, I've attempted to find a way to compile the files to a .mrs file but not sure if that's the correct thing do to either.

I'm just trying to find a version of the map that will open in my debugger, or some advice as to how to compile the files I have to what I need to. I do have a encrypted file also but the server owner doesn't seem to want a bar of sharing a non encrypted version with me