It was pretty fun, but really unbalanced.
DPC cost raises way too quickly and each purchase is pretty much worthless due to it only giving a single digit improvement compared to the massively increasing HP amounts. And it does not help that crit chance gets capped at smth like 35% because crits are pretty much the only way you are gonna be dealing HP.
DPS is also worthless for the same reason as DPC. It gives too few for a way too big price. I played for something like 30 minutes and got past 5 bosses, and by the end my DPS was a small 60. It does NO damage, and is pretty much a waste of money.
Other than that it’s pretty good! I would personally love to see it getting expanded into a bigger project (if you fix the balance issues that is :p)