https://mech.nav-alpha.com/#b5b1ff27_HLF-A Good ammo count, good speed, good cooling. Seems a decent brawler, but probably a bit too fragile due to lack of any armor / structure quirk. Possibly best used as a skirmisher or "piranha" style: find a lone / easy target, push it and kill it, repeat or help fight the big enemy formation until you find another target of opportunity. Downgrade engine to cXL280 or strip armor for more ammo / utilities.
Mini Onion is best onion despite shit health and hitboxes can never go wrong with ac20+srm24 combo masc helps a lot! this be unskilled kek HLF arms are huge, they good as shield too