If this results in multiple more heads to fight, the asset is going to be peeved. He knows how hydras work. How HYDRA works.

But he can take orders, as well. And whittling down heads, if it does work, will make getting at its body easier.

So he grunts in answer to the order, and lunges at the beast itself at his first opportunity, apparently heedless of his own safety, to take his larger knife and hack at its extended neck while it tries and fails to chomp on his metal arm.