You're right the difficulty is quite high, even though during the development we were getting the difficulty down, but we haven't managed to play enough hours to find out the perfect difficulty.
The meteorites act sometimes strange, we haven't managed to figure out why...
Removing rainclouds seems straightforward enough for me, so I don't know how more intuitive could it be.
Pickaxe was difficult to implement in our type of game, we just haven't figured out a good way to implement it.
"Slower start" for new player is a thing we wanted to implement, but we didn't have the time. Still though, the game would surely be nicer if the difficulty curve could start lower.
Thanks for your feedback, looking forward to play your game :)