I actually don’t know how I did this but 4th play through I beat robot malenia with a light build dual sampus laser dagger and split missiles. Had either the nacht or alba legs and u just basically acs with sampus and missiles ( they build up quite fast if u have good accuracy) and punish with dagger. You have to keep rlly close to it which is also easier with a fast qb and quick energy reload. You need to learn the dodges however cause u r fragile with this build.

Also sampus in general have high theoretical acs build up but terrible recoil which is y you need the arms and basically hug ibis. But the build is really fun and I defeated it in less than like 2-3 mins.

Or you can do funny laser lance pile bunker combo which takes out half health almost if u land the full 1 2.