Stuck in Time - My favorite track of the two - I definitely hear some Celeste and Undertale in this! Awesome expression in that lead synth, especially when you slow the vibrato towards the end. The arps are especially beautiful. In the intro, there is some interesting detail going on with the effects, low in the mix. I can tell this is going to be an emotional journey.
The Earth Can’t Hold Me - This was epic! Nice harmonies, bold panning choices. Based on your story, the way I see this track being implemented in a game is in vertical layers, where each layer fades in as the character walks closer to the end. So I think the drums and choir at 3:22 could each fade in separately, as well as the guitar at 4:02. The mix is somewhat overwhelming at times - maybe some tracks could be balanced better or EQ/filtered, like a high-pass filter on the panning synth. Good job with the key changes - these really complete the narrative arc!
Overall, the composition and production are emotional, dynamic, and creative. You have a very strong grasp of narrative writing, throughout the soundtrack and in each individual track. I also wonder what the rest of the soundtrack could sound like - perhaps with some lighter, neutral emotions to contrast these important story beats? Great work here!