This water processing facility clearly isn't full enough of slime, since Durandal wants us to open a door and let some more in. Time for some swimming! Just mind the Juggernaughts.
This podcast uses:
Aleph One, free and open source versions of Marathon for Windows, Mac and Linux at http://source.bungie.org
Remixes of the Marathon soundtrack by Craig Hardgrove at http://themarathonmusic.com
We use irons' Co-Op script: