A well made and groovy OST, nice work! Much like how other comments have mentioned, I love the groovy jazz "Somnambulant" had, very nice! Although if I had a favorite track, I'd say it'd be The Dreamcatcher. It combined such an enthusiastic boss battle theme with such groovy elements and I love it a lot! (not saying the other tracks are bad tho, all of them were great!).
Overall a really impressive and groovy OST! That's all I have to say really, have a good day :D