Neat game! out of theme but that is fair I guess, congrats anyway.
Just a bit of feedback, rather specific you may say, but the Midas item is not well designed by what i understood for 2 reasons
You should avoid locking quality of Life stuff behind upgrades of this kind, though I understand it is interesting to make you have to click in the coins and make it go more easy later on is nice, but then enters the second problem, satchel renders it completely useless, i didn't get midas, so i don't know if you did something for when you get both, what would solve this problem.
Also could be interesting if there were towers that buffed other towers based on placement, like "adjacent towers shoot 15% quicker" or something like that and the ability to delete towers to replan the positioning.
Also maybe upgrade towers by stacking them.
But really great job.