Build a miniaturization laser assembly, and miniaturize existing armor components, as well as introduction of two new armor components, a new weapon, bugzapper with three times the range of a personal laser and massive damage..
Stack 9 vanilla equipment solar batteries into the into a 1x1 armor slot, 8 Mk-2 batteries into a 1.2 slot. Reduce, Mk2 shield, laser, , roboport Mk2, and night vision to a 1x1 slot, reduce a exoskeleton to a 1x2, and fission battery to either 3x3, 2x2, or 1x1 without any performance reduction.
The bugzapper, start out as 10x10 items which can be eventually be reduced to 1x1. The bugzapper, has massive energy usage, delivers enough damage to single round any bug.
The resources needed to create the miniaturized items are fairly substantial.
The chain to create the items is make some cleaning solvent. Then box up some mixed ore, grind the mixed ore to make gravitanium ore, and smelt new ore into gravitanium plates. Take the gravitanium plates and clean them with the solvent, then turn the cleaned gravitanium into powder. Finally box powdered gravitanium into an iron box with some additional iron for shielding and put that into a steel box for transportation. The miniaturization ray, is also rather expensive but fairly straight forward to make.
To miniaturize an item, reprogram a few construction robots, disassemble a centrifuge, slowly release the gravitanium into a centrifuge as it is spinning around inside the assembly machine. That will create a massive magnetic field. Within that magnetic field zap it with the nuclear powered miniaturization ray. If all goes well the item will be shrunk in size but not capability. The more the reduction, the more robots and gravitanium is needed.