I'm missing at least 4 prizes. Three known ones are , and . I'm not so sure of the 4th. Apparently someone got 56 prizes and I'd love to know how they were all figured out.
I'm guessing the Scroll was from fighting Jaxon? I did a bit but I couldn't manage more than 5-6 fights in. However, I did take part in that. How many fights would you have needed to do to get that scroll?

I managed 122 fights, probably around 1k-ish damage in each fight, and got both the book and the sticker but not the scroll.
If you go to SubetaLodge they list all new items. I got 52 different items and two duplicates for a total of 54 items and I think I'm only missing the scroll?
I managed about 100 battles and got the sticker and book, but didn't receive the scroll. I figure those who battled the most and ended up dealing a toooonnn of damage got the scroll.

I got 52 different prizes and got both the baby ghost sticker and the scientific notebook. I think most of the ones I missed were from the battles that I couldnt even attempt ( I could only battle the chair and spider, so I figure I got those items? and I only did at max 100 damage to Jaxon )
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I also received 52 items (all but the scroll). Same as Ryuu-Ryuga.
[item=Dappled Unicorn]
[item=Great White Shark]
I know the scroll was given out under top 50 battlers, but not where specifically yet.
I counted 53 not including the achievement prize and duplicates. According to the list on SubetaLodge I have everything but the scroll. Some people might have gotten duplicates. They might be looking at the total item count and not the amount of individual items themselves.
I was wrong. Did not get:
I got 54 unique prizes. I'm missing 4 battle prizes, but I think that's all I'm missing: [edit] There were 60 prizes according to this thread and I'm also missing + Both also battle prizes, I hope they're not too hard to get ahold of though :c
I got 56 unique prizes (57, if you count the achievement prize, which I haven't been), no duplicates, and I think the only items I didn't get are:
I didn't get
I did all plot steps, fought everyone except Devora. I only battled Jaxon about 20ish times and did around 35000 total damage (but that is very much a guess, I didn't track it at the time).
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