The synth strings are a little on the harsh side. There are some plugins to soften the sound. I use ReaFIR in Reaper, some people use Soothe, but multiband compressors are like magic for reducing harsh overtones.
The bass is clean and pleasant, though.
Oceans:
I feel like I want that higher pitch sound to be wetter and farther away, like it would be floating above the scene, giving it a more spatial, lush feeling. It could also use a little softening on the overtones. Maybe slightly quieter in the mix too.
Ponds:
I like the sudden shift. I think the reverb could use some EQing, and a larger reverb like Valhalla supermassive would really drive this effect farther. I love the vibe here.
Rivers:
Maybe a little muddy on the way some of the frequencies are coming together, but I'd need to troubleshoot your specific mix in this case.
Entity:
Describes an entity well. I think I have similar feedback on this that I do to ponds. I love the little rising and falling synths in the background.
Sacrifice:
I like the feeling on this one more.
I have redundant feedback for the last two tracks. Overall, the vibe creation and creativity was on point; I think it just needs some more precision and time in the mix to get that "its dirty but it sounds so clean" sound that would make this whole set really land.
Great work!