At least two spots where he gets repeatedly stuck.
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The worst is the tall spire cliff on the corner of the map near the map edge ledge and diagonally across from the jump pad. If Hammond grapples this spire cliff up high and swings around (in my case, as an attempt to swing up to the sniper hiding up top), you get stuck on the back side- between the spire and mountain- above the space behind the small health pack below. Once there, you have no recourse but to wait for someone to kill you, or wait for the game to end. Even releasing the grapple, you are wedged in.
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Frequently getting stuck at the corners of the death pit around the large health pack island. If you hook onto one of the surfaces above this level (the awnings over the lower level entrance, for example) and get in a position where you’ve dropped below ground level into the pit, you often get stuck in one of the four corners of the pit and cannot swing out. This may be intended, however.