All hot female assassins are impregnated

Dragonfly thrusted back & forth hard against Batman's penis. While her partners suck his nuts.

Dragonfly: Yes! I have achieved a 4th load! Can never be too careful with you Bat people...

Talia: Well, done beloved. [She gives him a big kiss.] Let's celebrate you creating so many great children.

Bruce is exhausted but can somehow keep going. Talia pops open champagne.

Talia: drink.

Talia puts his penis back in her butt and his mouth to the bottle.

Talia: oh yes beloved!

She forces him to chug the bottle while slowly, sensually having butt sex. Swinging her hips slowly from side to side. The other assassins make sure he drinks it all.

Nyssa: Let's take this to the bath. You have a very big one.

Batman is pushed to the ground of the bathtub. Talia straddles him.

The assassins pour alcohol everywhere. They lick it off him and each other.

Batman showers them in semen.