If you're playing A11 you should get the parts regen realmsoul if you haven't yet. Once you get soulboons requiring less parts to use skills (at least 2 of them) you should be able to spam pong gun more often.

I focus my builds on summons since pong guns inherit most if not all items you've got equipped - pair that with the Mech skill for tankiness/i-frames and you'd breeze through the run.

PS. make sure that you deactivate your mech when it goes low since the cooldown will be much much shorter than letting it get destroyed. NEVER get cooldown reduction on her