How to fight Mechanoids without EMP?

The past three raids have only been Mechanoids, I am literally facing second renaissance levels of destruction out here now. For the first two I decided to use EMPs until I realized they're putting me at a disadvantage more than the Mechanoids since it keeps shutting off my shield belts and disorientating my fighters.

Currently I'm using tight maze-like hallways full of turrets and teams of literal knights to fend off the Mechanoids but I feel like I'm not going to make it another year like this.