I have encountered (of course) many bosses in Cave Story and I finally after a couple playthroughs, got to the blood stained sanctuary, also known as Hell. Thinking of Ballos, I wondered, what are the hardest bosses. Mine is the Undead Core just because I haven't got to Ballos yet. What do you...
The hardest challenge for Cave Story is beating the whole game without using any other weapons besides the Polar Star at level one and 3 health minimum trying to get the best ending. (Still working on this challenge from 3 years ago.)
Please help me, I got all the requirements for just the Last Cave, but I got the Last Cave hidden. I did the requirements like save Curly, get the Booster 2.0 and etc. I don't know why I didn't get it so please help.