I may have gone overboard on the cost increase curve haha. I wanted to add movement based upgrades to alleviate the feeling of just standing in one spot clicking endlessly.
The Death Crab only has 100,000 health... totally doable eventually. The real issue is that I don't know if you can buy all the upgrades before the crab dies with how expensive they get. I think having more multipling damage upgrades would make the later purchases feel like bigger increases for sure.
Thanks for the feedback!