Sweet Dreams is a very nice piece. It fits well as a title screen. One thing in particular that I liked is how the melody played the same motif at different places within the measures, specifically right at the start. The melody and arpeggios also fit together really well. There are a few places where I personally would change the arpeggio to use a different note. I also think that having an additional instrument (I would choose violin or cello) playing on each of the emphasized notes on the arpeggios would help listeners to feel the beat more.
Flee? reminded me a lot of Forsaken City from Celeste. I personally would cut the first 10 seconds off of this song, to get to the music sooner, but I also don't fully see what you were going for; perhaps, if the game was made, those 10 seconds would be very beneficial for atmosphere. My only real complaint is that the song ends very quickly once it gets going. Your mixing work on this one is impeccable, and the parts work together very well.
In Wake Up, the soundfont you are using for the clarinet does not work well with the high notes. A flute would probably have worked better. I really like how it sounds starting at 42 seconds in, when the bass comes in. What I would have recommended is that you replace the clarinet with a flute from the start until 42 seconds, and then have the clarinet play until the loop, with some modifications to it's melody to keep it from going quite so high. The bass cutting out at the loop feels pretty abrupt. The guitar part is very well done. I really like how it the guitar plays in 8|4 at the start, in a 3 beat - 2 beat - 3 beat pattern. The clarinet part could have been written to fit that pattern better.