I was friends with V1ZION for a few months now, here on Newgrounds and Geometry Dash. As any friend would do, I would give detailed constructive criticism on his work. He has a unique style, which is great! However, there are a few minor flaws to it.
Starry Night / 星が輝く夜
As for this song, there isn't anything wrong with this track. My only complaint is that the song's melody can get a bit repetitive. Keep up the good work, my friend!
Rolling Sky - The Sea (V1ZION Remix)
A neat trick I saw that you did is that you made the song more vibrant after every beat has passed, which is what every musician should do. My first complaint is that there should be more melodies in the background, as it can be more enjoyable and more original that way. My other critique is the part starting at two minutes and 20 seconds, as the ending is abrupt. What I would do to make it more expected is to make the end four beats, rather than two.
A Neverending Journey
My only complaint is the repetition in the song, but I understand that you only had one hour to make this. Nice effort!
Through the Fog - Peaceful Stagnation (V1ZION Remix)
I would consider this the best of the four. There is no repetition in the song, and there are different melodies. To make the song even better, I would add even more night-like atmosphere to the background, such as crickets and thunder. An example I can show you is the beginning of this song. Other than that, amazing work!
Scores
"Starry Night / 星が輝く夜" score: 9/10
"Rolling Sky - The Sea (V1ZION Remix)" score: 8/10
"A Neverending Journey" score: 9/10
"Through the Fog - Peaceful Stagnation (V1ZION Remix)" score: 10/10
Total score: 9/10 (36/40)
Summary
Your work is unique, and it is nice to listen to! The only thing you need to have is more variety. I would recommend listening to this artist. He is great at making music, and he pushes the limits in using GarageBand!