Hi @sRosE296
This is a known bug which is still being looked into, I too suffered the same issue. Well actually the bug was also with immune ducks.
A workaround for now is to go to local co-op and continue the game from that same point. Finish the Octopus scene and it will save the game, from there exit out of local co-op and you can go back to your original game and continue from that save point.
With local co-op add a controller as well as your keyboard so you can play it solo, this is easily done solo so no need to worry.
