Congrats on this submission! I managed to finish it in the second "run"... but now I'm supposed to sit there for 1000 years or what?! 😂 Seriously, well done for a first jam entry! Loved the level design. Walking felt a bit tedious and I got really stressed when my fuel ran low, so maybe some guidance would be helpful. The ambience sound was fitting and amplified the vastness of the place, but one thing that broke the immersion was the lack of footstep sounds. They can get annoying fast but if you do them well (different sounds per underground, random sound per step, variations in pitch and volume, use of reverb zones where applicable,...), they could really add to the atmosphere. There were areas/bridges where I thought I might be "outside" right now, if that's the case then maybe add some wind sounds there, too.