Super Paper Mario

I managed to finish Super Paper Mario tonight.  Total game play time of  just over 20 hours.   It seems, from the survey I got from Nintendo that I must have missed a number of things.  They asked about a pit of 1000 trials or something, but I never came across it.   I wonder if I beat it to fast, and didn’t have to do as many things because I did? I’ll have to look up a strategy guide, or walk through and see what they were talking about.   I really enjoyed the game though.  It held my attention when playing it, and was broken up into enough “chapters” that I could play a little and then put it down and not play for a few days, then pick right up where I left off.