I'm not a huge fan of DLCs that only give you a tiny amount. Still, the shields aren't awful, they just may not be worth it to everyone. To each their own, I suppose.

This might not be for everyone, but the game is without a doubt worth trying. It attempts to combine different platformer genres, into one game, which is fun by itself. On top of that, they actually did a pretty solid approach with making the worlds feel unique and making boss fights more interesting, by adding even more genres. I say check it out. It is old school, with a new school approach. Worth trying.