Acid? Very nice. He took off towards the van, engaging two of the Purifiers. He ran straight for one, flipped over him at the last second, and delivered a spinning backfist that had him reeling. He dropped down into a leg sweep, tripping up the man in front of him, and sprang up into a rising uppercut, taking the man off his feet. Seeing an opportunity, Adrian grabbed the Purifier before he completely hit the ground, wrapping his arms around the Purifier's legs. Then, putting his back and legs into it more than his arms, he swung the man around and let him go, sending him sailing into the other man, who was just now closing the distance after the backfist.
Adrian took enough time to make sure the two of them didn't fall off the side of the bridge, and then stormed over and smacked both of their heads together to knock them out. Then he turned to check on Meg, who was still hiding in his driver's seat. That left one conscious, but Adrian had a plan for that one. It involved interrogation, and not very gentle treatment.