Thanks for playing! Glad you made enough progress. So in terms of fitting the theme, as you progress the light gets stronger so you see better, the FOV increases showing you more of the map at the same time, and your speed also increases.
At the same time, the spikes also become more and more as you progress (from 1 at the beginning to 4 near the end), the seekers also become more and move faster. So in fact I tried fitting the theme for both the player and the enemies.
But I understand it might be subtle, so I do not expect to be the best game in theme votes.
Thank you very much for the feedback!