I can beat the full game in about 2-4 hours, this is how. play and play and play until the guy tells you to go up now. Go up and buy about 500 plastic explosives, 500 repairers, 1 good teleporter (just in case), 10 extra fuel tanks, and 100 dynamites. now, go all the way back down to bottom, blowing up every rock in your path, until you can't dig down any farther, now, using dynamite, blow up the bottom until you get to the far right. there should be a small hole there. drop into it. UH OH! (use explosives)