Martian Memorandum/Mars

After traveling to Mars there is no way to return to Earth and revisit the previous places. So you must be sure you have made some actions before passing the point of no return.

Before reaching Mars you must have done the following:
 * Show the Martian dagger to Mac Malden at the murder scene (if you don't, the murderer won't be found).
 * Read the documents in Alexander's safe and learn the names: Lawrence Barkley and Ferris Collett (or else you won't be able to visit them on Mars)
 * Open the chest in Rick Logan's hut and learn the names: Dick Castro, Deacon Hawke and Lowell Percival (actually you can discover Hawke and Percival elsewhere, but the game won't give you again an opportunity to 'know' Castro, even if his name is mentioned later)
 * Unearth the mound outside the hut and discover the paper about the aerobic class

Casino
Before entering the office, you must make sure you have the following:
 * Glasses (from Bradley)
 * Big Dick's Card (from the Casino floor near the entrance)
 * Facial Kit (from Dr. Barkley's office)
 * Hover board (from the power plant)
 * Blueprints (from the toilet stall)