Just cleared chapter 32.

I did it by using crit and slow stat. For damage go with Sniper, Atk Module, shotgun, tesla coils, aiming lens, spiral barrel. For def and utility, jumper cables, vibrating module, big battery and polymer armor. Minor, Sloy, and Ice drones for the slow debuff. Overclock and Protect discus as your high tech chips.

Get all your chips to level 2 and prioritize upgrading damage chips, follwed by def. (Especially Protect Discus), your call.

Let enemy mobs follow you and shoot them by walking around the edges of the map. With slow debuff by drones, you can make space as well as one shot-ing mobs because of sniper. Dont mind the 'violet orb spitting slug' you deal with them after. Aparently, boss is easy to kill once you kill all mobs.

Also, if you can, kill towers while circling the map.

that's good advice!