Cave area needs definite tweaks for things, Even dual metal cannons mk2 fail to stop the basic slime count for things before being overwhelmed.
If you could shoot them before they unleash all at once, it might be okay, but maxed upgrades and i just gave up on this area after 3 hours of failing to achieve anything before being swarmed by slimes needing over 1000 energy to clear, and then respawned and instantly trashed anything i built to volume.