I'm glad you liked it!
Yeah, noticed the problem with the canvas size when tried it on mobile, I have to discover a way to fix that, also I have to hide the tornados haha, and I will check the second problem.
And yeah, thunder and death are very OP, I didn't have time to test enough before the submission, and if one buys a lot of 'cooldown', one becomes invincible. I have to balance the game in some aspects.