Do the mega and Christmas levels count for 50 blocks?

And if you lose a level does it still count?

You need to beat all the 4 levels that are in ILs and you should be good. Christmas is just Snow World.

Does 100% need christmas and mega?

Also does Ludo Battle count for 100%? If not there should be at least a category just for Ludo Battle

Christmas wouldn't count since that is just Snow World 100. Mega would count because of the 86% category existing that excludes "Mega." Ludo Battle is a separate game mode, so it doesn't count.

Ok, I did a run with the snow world in it but it was the first level I did so it should be fine.

snow world is in the run