I've pulled out all the stops this evening, and got the beta ready for download!
Please comment with any bugs, or problems you may find! I am aware of potential issues with a lift on the Toxic refinery area near the little window you can open, however I believe I've fixed this before uploading!
If you do get stuck, let me know, but unfortunately you will have to either re-start, or use the no-clip cheat to get out. Other than that small issue there are no problems that I'm aware with with this mod now!!