World of Light HELP!!! So I like to think that I'm like halfway decent at Smash Bros, I usually wreck my friends when we play couch so I did WoL on Hard difficulty... Then I found out that WoL is either really easy or really hard, actually, it gets EXTREMELY hard.  Finding out I could change the menu music made me want to finish the mode, I'm at the final boss fight and I'm just tired.  Is there any reason to beat the mode on hard instead of easy?  Like is there an achievement for it?  And can I change the menu music if I just beat one of the bosses?