Thank you so so so so much for your kind feedback.
The overall depth of the map is 418 metres. In a way it would make sense to display it, but at the same time it would maybe take away from the experience, I don't know. It is something to consider for sure.
The O2... don't even get me started. :D it was a balancing act to figure out what amount is enough but not too much. Because we really wanted the player to feel what you felt. "being alone in an endless empty space". Putting too many powerups would trivialize danger. BUT if we don't put more, the tradeoff is that people get drustrated with the game and might never finish it. So again, your feedback is something to consider.
We plan to build this game further because we really enjoy it. So a lot of things might change in the future.
For now, I will tell you what I tell others as well. if you want to see the ending of the game, you can try turning the brigthness higher in the desktop version's pause menu. It helps with visibility.
I guess this is a lesson to learn. We never joined a jam before. making the game a bit more difficult by choice for sure, but it might be something to balance further.
Thanks again, we really appreciate it.