Ok so I managed to finish off the middle sized cyborgs for the army. They are the Synod's highly skilled shock troops and commandos. They drop from orbit using a combo grav pack/ shield generator which is used up during the jump. The empty packs are buried before the troops head out to their objective to reduce the risk of enemy observation.
The Jotuns are about twice the size of a standard bio-bod immortal and carry full auto lasers to support their smaller brothers.
All,in all the force is a fast hard hitting and we'll armored force but very expensive points-wise as befits a highly capable commando unit.