This is a mod that re-enables the inaccessible MP levels: Pool, Dark Valley, testers_mp_bath and testers_mp_military_2. It also enables 4 unused MP skins.
This fixes the game so 4 mp levels that are disabled but present in the game files can be played. A few of these levels were later included with Clear Sky and Call of Pripyat. This mod was created by Hellraiser. It is mirrored here for archival purposes as the website it used to be hosted on; StalkerInside, has its downloads now disabled.