The bell in the intro of "Opening" sounded a bit like Hopes and Dreams from Undertale lmao. Though I really love the composition in that one. Especially the ending part, it really sounded like the climax of an RPG trailer and that's awesome. "Space Palace" is also tense and your orchestral style still holds up well in an ambient track. However, with the name containing space, you did mention deep galaxies as well, I feel like more ear candies could be inserted to populate the second song. Should help create more memorable moments in that song.