Heh... I love long compositions!
Very nice spacey vibe and.... It's kinda like Black Mesa in some ways, and that's really cool! The synthesizers are a joy)
The transition at 4:10 is cool
The increased dynamics at 4:28 - very motivating to go walk on Mars.
The only thing I can suggest is to improve the overall mixing of the track. Try to give the guitar more space in the sound to make it sound more expressive.
Anyway - nice work)