How does one deal with the fact you can't mine while swimming but a single pixel of overhang is blocking you from climbing back up the cliff? Seems to softlock me all too often unless I can get a rare moment that I can dig.
It seems I can just kill and spawn a new player at any point if things go wrong? Didn't invalidate my mission completion at least, but I'm quite sure my gold disappeared.
In water, normal clonks are not great for mining and travel as they swim slow and have low oxygen, and cant do most actions. If a scenario has an "aquaclonk" avaiable, buy that clonk. It has a higher price, but can walk, build, dig, and climb in water.