Hello Lukuluk!!! Thank you so much for playing our game and your comment! Yes, we have put this suggestion into our mind, and in later versions the reset will be bound to the R key on the keyboard!!
AND yes, we are aware from the feedback of our playtesters that the diffulty progression is very unreasonable to many of our players, and in later version we will surely add more practising levels and be sure to help the players master the strategies!
Thank you again for the suggestions!