So I just did a few fairly lengthy sessions on hard; on one of the runs the game crashed so I didn't get credit for anything; that was like 5 dungeons long or something; on the next I went 10 or so and it showed me levelling up and I got all the loot I picked to keep but when I got to the town screen I had not levelled up at all. I mean I guess I still advanced since I now have a bunch of 10+ levels higher allies; but my character is still the same level as when I started. Basically I lost 4 hours of progression. I'll keep playing it since it's a fun game and seems to be the best Dark Souls 2 time killer I've found, but what a bummer.