During the Big Dig I had to purposely die because the robot thing fell into the ground and was unable to move and couldn't get it out to blow out a wall so when I sent me back to a previous save was before you blasted out any of the tunnels everything is there but I can no longer use the floating robot thing to blow out the walls I cannot do anything I can completely stuck and really want to get that X01 armor! When the robot fell thru the floor it was in a subway hallway before you enter towards the track I purposely died so I could go back to previous save. Know I cannot compete the mission also the drinking buddy robot mission where you can keep it or escort it to Hotel in GoodNeighbor I died when I go back to the location where the robot is said to be it isn't cannot find it no matter what I do I so far along in the game to go back can anything be done?

Try waiting a while, I think after 30 ingame days or so a lot of stuff resets itself. Maybe then they will work properly. Also go to different world cells and then come back see if that renders it properly.

The drinking buddy quest is bugged for me and I have gone like a few months ingame time and still bugged. He seems to enter this building and won't leave the place.

Jesus.... Punctuation and paragraph please.... You're asking for help, but the way you're telling your problem is awful.

- Big Dig: What exactly is your problem? If you're talking about the Power Armor, you can go back to the tunnel through Bobby's hours and pick it up later.

- Drinking Buddy: Are you keeping the robot for yourself or to escort him to Goodneighbour? If you keep it for yourself, wiki says that you won't be able to complete the mission until you give him back to Rufus. If you leave him going to Goodneighbour alone, chances are he could be dead along the way. Yet if he survived without your escort, he will stay in front of hotel forever even when the mission tells you to talk and bring him inside the hotel.