Suddenly, you have this huge unkillable bullet sponge attacking you with everything from scenery, acid spit, swarms of baby spiders, constantly charging at you.
You’re supposed to double jump to avoid her, which you can’t because of all the debris, while pumping dozens of rockets into her.
It was completely unlike the Gonarch in the original game, which was more balanced with the overall difficulty setting.
It broke what was until that point, an incredibly fun game.
I use Heroic to handle Gog, Epic and Prime games. It even has an 'add to Steam’s feature, if you really want to have everything in the same launcher.