A pretty decent SMG with a stun grenade that lasts longer than base UMP9's. Her tiles wants her to be the main tank, also her buffs are actually quite nice (+20% firepower) for ARs. Mainly suffers from stun grenades being less than useful against bosses and the fact other, better SMGs exists. In fairness, UMP45's existence makes a lot of SMGs less appealing in general, but her 4.5s stun has some potential uses (Golyats).

While her exclusive is good, it doesn't really change much about her performance.