Tilt had messed up his attack, at the last moment the titan had noticed him and turned stopping his blade from slashing deep enough, the titan stumbled onward right at Anya!
Arya was coming back after she'd slashed it's eyes like the first titan they'd faced but she'd misjudged and was coming in too low.
Anya, standing on the ground in the titans path had to act, she faced the titan and fired her hooks, they landed one in each leg of the titan, She fired gas recklessly, the titans hands swung by barley missing her, flying mere meters above the ground she released the hooks, flew through the titans legs and slashed. She lost one sword as she spun through, she landed in a roll and then was up and running firing her hooks into the trees, there was a crash as the titan fell to it's knee and then a louder crash as Arya cut it's neck sending it face first into the ground.