Hi.
There's a really annoying thing that happens quite often with two kind of mobs: the big one with a hook and the sort of insect-tank with a bumping skill.
When they use their skill, they can pull or push you outside of the normal path and you are completely stucked (or you can move, but with no possibility to go back on the good way). The only ways i found to go back is the teleport of apocalyptic form.... or managing to be hooked again by the mob towards the normal path (I managed it once, but it was very lucky).
There is obviously a collision issue while they use their skill.