"Who's this kid who hired you?" And with what? Money seemed useless here, so he'd expect people to trade in other goods and services instead. The only reason to use money was out of habit.
"How many here are killers?" A straight question, and Batman watched Schuldig's eyes closely to observe his reaction, turning on indicators in the mask to measure other indicators. He'd seen quite a few mentions of murder even in the short time he'd been here. This was not the place he protected; the mission did not apply. But perhaps this place had need of him.