He CAN Be Physically Beaten Down

Hulk is undoubtedly extremely durable, can take a lot of punishment, is hard to hurt in the first place and has a rapid regenerative healing factor that often overcomes any damage he does take – but he’s definitely not completely immune to being crudely beaten down in the most basic fashion.
The two most emphatic examples come in the form of the aforementioned fight with Zeus and an encounter with Sentry’s dark persona the Void.

When Hulk tried to challenge Zeus – who has hundreds of ways to easily dispose of the Hulk – the god wanted to prove he could beat him in a basic hand-to-hand fight and proceeded to do exactly that.
He hit Hulk so hard that he vomited, was left in a heap and didn’t heal for days (to the extent that vultures were able to feed on his wounds).
In the case of the Void, the powerful villain casually restrained the Hulk and proceeded to break every single bone in his body.
Moreover, the Hulk has even been knocked out by characters as docile as the Wrecker – emphasising that he absolutely isn’t invulnverable.
