: A lot of Eternal posts talk about flying with the orb. But the orb appears to
: just send off an extra large energy pulse when the second fire button is
: hit in my version (which is on Windows). Are there different
: "shades" of eternal or hacks?
There were five different Marks of Eternal, but only Mk V is presently available, and that's probably the one you have (released on Marathon's 10th anniversary in December).
The flight ability of the orb is based on it having negative recoil. If you look up and fire the second trigger it may pull you upwards for a big. Keep doing that and maybe you can fly.