It's actually good, but it needs to be balanced better. There's way too much clicking to buy all the upgrades. They need to cost more/have more of an effect so you don't have to buy so many at once. It's also frustrating to spend so much time in the upgrade panel given there's time pressure.

I spent too much on Bounty (upgrades cash per enemy killed) and damage/turret, but didn't get enough enemies thrown at me and couldn't pay the threat. Basically punished for being too strong. I should have put more into Passive, but I had no way of knowing that.

Honestly it would be a lot better without the time thing and just have the waves of enemies be the pressure.

But it's an interesting mix of mechanics and feels like it has a lot of potential.