Was frustrated at the start at the game with concept of having half a minute to live to mine some resources. Its not clear how to extend duration of breathing tank(recipe is unclear, if you can make iron plate recipe turns green but upgrades for tank/range/etc already glow green which is confusing, and there is no description on how to upgrade it either. Also no description on how to refresh oxygen duration, I clicked refresh, sometimes it works, sometimes it doesnt, still no idea why.