As the discription suggests, this is odn't on the Orbital station in orbit of Veldin. Once you dock, use the teleporter in the docking bay.
This will take you to a large circular room with a pool in it. Just hop in and go thorugh the submerged doors. This takes you to a waterfilled corridor with various hazards including mines and giant electrified fans.
Just get past these to the other end and the trophies yours.
Remember to take you time, theres no time constraints, so all you have to do is time it well.