Well, we got to 100% on Serpent Shrine over the weekend, and collected the Zombie Brain.
Congrats... now you can go on a Zombie run.
Have not aced that level yet and don't anticipate doing so any time soon.
It's not as hard as it may appear, especially if all you are doing is going through it to get to the end without concerning yourself with getting any prize & point bubbles.
When you do ace a level you are treated with at least one special prize, often a costume item, so it is worth it. Also, I find it is easier to ace a level if I have been playing it recently, as it is fresh in my mind, and I usually already have my timing down. If you want those extra prizes as well as the Play trophy, then you may find it both easier, and less time consuming to go ahead and ace the level you have been playing in, rather than wait and go back and try it at a later time... but YMMV.
BTW: There are also prizes for finding all the prize bubbles (100%), so if it doesn't say 100% for a level, then you know there are still some prizes to be found. 👍
So it tells you in the stats section what prizes are available where? That's nice.
Not exactly. It will tell you how many prizes are available, and the ones you have found will show up in the corresponding circle and it will tell you the name of the prize, but not the type of prize
(Costume Item, Sticker, Object, Goody, etc), nor where it was found.
However, it will not tell you the name or the location of the prizes you have not yet found or earned.
Also, the list of items is fixed, and not in the order you found them... which I suspect was done to make it easier to figure out which ones you have not yet found with the help of a friend who has found them, thus is able to tell you the exact prize(s) that you are missing. 👍