15 Hardest Bonus Levels In Video Games

Cave Story – Blood Stained Sanctuary

Cave Story isn’t kidding about challenging you with its uber difficult hidden stage. First off, forget about save points – you need to complete the entire stage in one shot. No big deal…except it’s three sections littered with hazards like spikes and collapsing blocks. It even has two bosses – Heavy Press and Ballos, the latter being the ultimate end boss and necessary for completing the story. Oh and Ballos has four phases. Make sure not to fail!