Firestorm Cyclone Chieftain - No Single Target - Koam Help Me

So, whatever this is that I am running may be beyond help. But it would be really nice to be able to kill a single target without needing to rely on explode.

I probably should have stopped a long time ago, but appreciate any input on high value upgrades <5 div:

https://pobb.in/F2yVFMbWl8l8

https://reddit.com/link/1s5f6k8/video/rkacg8rkanrg1/player