Yep, the lack of oxygen is the true killer of this game. and that's on me for modifying the depletion to test various things of the death sequence but never touching it again to leave it as it was intended. My apologies!
The room labellings and the map were on the schedule, but unfortunately, I never got to implement them due to changes in the layout middle stage and lack of planning time. I am eventually adding this to the Final game. as well as the objectives that are a much-needed addition. I am glad you think it is cool! Thank you for your feedback. it means a lot to me!