Go To the Will Rockbin open up willrock.cfg file in note or whatever and edit this line under [Debug]:

UiNewGameLevel = lev_1_1_outdoor.lg

and change it to this:

UiNewGameLevel = lev_1_4_corridors.lg

Go to a new game in Will Rock and you will start at level 4 skipping that whole level 3 problem. If you sub in any level name into that line u can basically warp to any level. Level names are found in the levels folder.