According to Level-5, the developers of Scribblenauts Unlimited, “There are no Wii U accomplishments that are system wide”, explaining that:
They are up to the developers to include or not include. Scribblenauts Unlimited loosely has them in the form of “Global Starite Shards” which is like a giant checklist of global things to spawn and do in the game that aren’t area specific.
I suspect this will disappoint some people. It is consistent with Nintendo’s lasting philosophy (aka, distaste) in regards to achievements though.