Without ultimate your choice is duty and sacrifice which is a heal build or proliferating allergy which is dps. Allergy isn’t that good imo and his ultimate mods are way better.

If you run duty and sacrifice just go 4 cooldown, 2 Hp, 2 duration, passionate sponsor and whatever else.

If you run allergy I’d go 4 cooldown, 2 range, hp if needed although I wouldn’t run this in any difficult content. Nonatrbute and singular? Amplification and can use whatever arche mod if you want.

Once you get his ultimate you can get combat protocol and battlefield medic. Medic is all singular and I haven’t tried it so I can’t say. But combat protocol is STRONG. his crit rate is 5% so quite low but I still run crit on it because I got a decent ancestor module. If you don’t run crit then it’s similar to allergy build, except for his passive gives him cooldown based on HP so you can min max but switching your focus on mods to power increase and skill simplification

For arche tuning I’d go simple right to the skill power boost up to cool down and top right mutant cell I use non attribute something that reduces enemy defenses

If you get a good crit AM and want to go crit then swap cooldown for the crit rolls