Very entertaining, I hardly sleep at night because I was very into the game. I have a couple of recommendations for the dev, I haven't read comments so I don't know if what I'll post has already been written. Regarding the improvements in general, I think it would be good to specify what is needed to unlock a new improvement, I spent several hours gathering mithril thinking that it was what I was missing to unlock some improvements, but that was not the case, things like That makes the game slightly heavy to play. Regarding the dynamite launching tower, I see it well to alter the improvement that allows you to launch a large bomb by aiming manually (I don't know the name of the improvement itself) I was trying to hit only one against the mountain but it was not possible for me no matter how much I brought it as close as I could. Greetings.
I'll be adding upgrade requirement display to the upgrade buttons. Maybe yes after you unlocked them once, or with a prestige upgrade, but maybe just as default since so many people prefer it.
The Wind Bomb can be rather weak and can't reach the mountain if you do not upgrade it with the related dynamite upgrades (and also prestige ones). But I do have plans to improve it and also change the cost scaling to be lower and use based and not mountain-level based like now.
Thanks for feedback!