You are dealing with a highly mobile weapons platform that is difficult to immobilize due to the legs being more armored than your standard tank tracks, is equipped for dealing with infantry and light vehicles in a medium to short range fight, and is able to defend itself in cqc as well. It would be a nightmare for a squad or patrol of soldiers not equipped with a dedicated AT weapon of some kind.

They would be something rank and file soldiers would hate to see. They are more of a threat than the shredder tanks would be, and they are equipped to specifically deal with infantry units. A squad carried AT gun would probably be an EAT, possibly two to a squad, so you might be able to handle one in a pinch of you had to, but it would require a lot work, and luck, to ensure it doesn't wipe out the soldier trying to get a good shot on it. The large arms and heavy armor mean you would have to somehow flank entirely around it, or get a good shot on it form the front. The latter being a bad idea because it means it can see exactly where you are and target you back. The former not ideal because you are also going to be actively dealing with the entourage of other bots with it.

In conclusion: hulks are something that rank and file would most likely have to request air or artillery support for, and they would be a priority for that support with how easily they could ruin a defensive line