Crashes and Lag, the greatest enemies of humanity.
To the point that I almost added them to my game. Almost. (I'm not joking. The only reason I didn't was because my artist didn't have time to make the sprites).
YESSS! The crashes took away so much time from me... And making a unique battle system is difficult in the span of a month. I'll be sure to check out your game later, it looks beautiful!