Water. A dumb decision that ruined the game for me. End of customer.
Water being unstoppable is a dumb design decision. Coupled with no auto-save, it is a customer killer.
Its like having a big red button that says "Oh, we just decided totally screw you and invalidate all your effort in our product. You put in a lot of effort and love it? Great, then we screw you just that much!". So, the more I invested before I make a mistake, the more I lose. Not a sensible decision.
Fix the water. Get an autosave. That's all. Simple really.
Angry enough to write a response in the hope that you fix it, but too pissed off at this point to be nice about it. You just wasted my whole day and destroyed the fun I had in the process.