Thanks for playing our game, we really appreciate it. You're so right about the lack of audio (and visual) feedback on the tank when it runs empty. We'll change it so the Oxygen tank to be visible all the time, even when free-looking. Physics is a fickle beast, and sometimes it has a mind of its own when it comes to collisions, even with continuous collision detection enabled, which should have avoided this very problem. Sorry we didn't add the autosaves in. We spent all that time doing load/save and adding in checkpoints would have been easy by comparison. It's coming post jam. We told you nothing about the free-look to dive and that was a mistake on our part. Again, it's coming post jam. Thanks for all the feedback, it's great to learn from what works and what doesn't. We saw your game being streamed earlier today and it looks very good. We'll be playing it soon.