((I am so sorry PW))
The "Shredder" suitShort version, take a MkIII (or assault suit), add a fuck ton of knives and swords and shit, then add a little bit of armoring (or take away for assault suit) and rockets to not die instantly.
Long version, again start with a MkIII (or assault suit). Then add monoswords, force swords, white hot
cudgel sword, cold infused swords, ghost blade, basically anything and everything. Attachment point on the forearms, with a sheath system that allows you to retract them out of the way and only have out certain ones. Also, probably a little space magic will be involved, but, a way to launch them out at targets, and then also a way to recall them. Beef up the rockets for more maneuverability, some light armoring (or take away some for assault suit) and a beefed up exoskeleton to handle the weight. Use an MMI to control it, and say, oh, +2 Uncon, +1 Aux, and +2 Dex to use. Hit hard and fast, then run like hell the other way. Rinse, repeat, try to not die.
Edit: Could also have forcefield armor to further reduce weight. AoT style maneuvering pack for quick erratic change of direction. AoP crowd wire style gloves because why the hell not at this point. Claymores if using an assault suit to encourage people to let go/get off of the suit. Some of that invisibility spray that one guy got during the attack on Hephaestus. Not to be completely invisible, just to be harder to see with the naked eye. Thanks to everyone for the suggestions
MOAR EDITS: Solid light armor. Especially if it uses uncon, and this is mostly an Uncon suit. Yeah. Controllable armor thickness.