One important thing with her mod is that she has a backwards facing tile now. This means fun times for Python fans, Nagant users, or users of any doll who prefers to be in the middle of the back row and could benefit from an attack speed buff, which happens a lot of the time. She also debuffs the enemy if the node you're fighting on is controlled by you, and buffs your attack and move speed if it isn't, but those are kind of icing on the cake for an already useful doll.

Oh, and the move speed buff is hilarious when combined with other move speed buffs, turning Hanyang Mod into a a rocket. This makes some boss fights hilariously easy as you give no fucks about their mechanics, and 60s is long enough for most battles.

You can probably leave her at Mod2, but her Mod3 equip is a suppressor equivalent with +20 evade at max. It's up to you whether that's worth it or not.

Another weird Russian specialist gun, meant to fire both above and below the water, which is why the doll has weird underwater parts replacing her left leg.

Her skill is as annoying to explain as she is boring. Basically whenever she fires, she has a chance to apply debuffs (that reduce target RoF and move speed) on her target, which at 5 stacks, explodes in a grenade-like effect that deals damage and stuns the target. That's the passive. The active fires a debuff grenade that applies 3 debuff stacks (+2 for the primary target) and briefly increases her debuff proc chance to 100%.

Honestly it's really weird, but it has use for things like Golyats, which, coupled with things like shotgun knockback and some RoF buffs, can help deal with some of the more annoying enemies in the game (for certain patterns.)

Also has potential synergy with ACR kinda (though resetting debuff stacks when she triggers explosions makes it a little awkward)