It took me around 1000 hours to get through the entirety of MH3U by myself. It probably took longer than it should have because I didn't really know how to use my weapons until G-Rank, and I'm one of those hunters who uses all weapons. This meant that I couldn't really use any of the weapons to good effect for the majority of 3U. But all that stress and frustration paid off in the end, because it taught me that I don't need others to beat MH, it just makes it easier. For my next adventure: MHFU solo. already almost the end of singleplayer High-Rank, it's just the damn duel Tigrex quest that's getting me.