Howdy! Thanks for the comment! The completion guide is as follows:
Hour 1:
> Get radio & talk to Samson
> Talk to Alex, get their journal (then talk to them again)
> Talk to Leon, get their *Space Beer* (then talk to him again)
> Talk to the others then report back to Samson
> Press the red button on the Bridge (front area of the ship)
> Return to Samson, then go back to the Charger
Hour 2:
> Talk to Alex
> Talk to Leon
> Talk to Alex (again)
> Talk to Joy, get her Headphones (then talk to her again)
> Talk to Maria, get her Book (then talk to her again)
> Talk to Samson
> Return to the Charger
Hour 3:
> Talk to Maria
> Talk to Leon, grab the Photograph (then talk to him again)
> Talk to Joy
> Talk to Alex
> Talk to Joy (again)
> Talk to Alex (again)
> Talk to Samson
Final Hour:
> Talk to Leon
> Talk to Maria
> Press the button.
Anything not mentioned here is considered a "side quest" and not necessary to complete the game.
In regards to the Samson code not working we'll look into it. There are a few bugs we need to address at some point, thank you for bring that to our attention!
Generally I think we failed to consider how to properly navigate the player around the environment without it feeling aimless, that is my fault :(