Well, finally started after being sick and having to put it off until after holiday with the family. I just set up the project and I have decided to use box2d collision to check between entities and use a grid based system for collision with the environment, I also want to try out the box2d lighting but don't know if I'll have time. I haven't used box2d before so I hope it makes things go faster rather than slower.
Right now setting up a few of the utility classes like switching between menus/gameplay and keyboard input. Then doing some character/character parts design on paper. I should have all the framework done today and will try to get some screenshots if I get far enough.
Gameplay wise what I have so far: You power on at the bottom of a cave and have to climb out. Your starting equipment will be wheels, a drill, and some sort of winch and cable system. Some possible upgrades: rockets, zero-gravity control system, magnetic tracks, grappling hook, armor to protect from collisions, and power system upgrades.