Difficulty: Hard
when you are in maze part at music room go to wrong one(second part of maze) you will see secret passage way put teleporter in there. abit hard to place it.
later teleport make your all way up you will see this door. go through it.
voila you did it

i will not show you in this guide. there's link for how to get into music room.
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1698268455
Difficulty: Very Hard

At olympus parkour. there's an teleporter which will teleports you to demo's toilet. and its hard task. squares are VERY small. only way to get up is rtd with updated code allows scout infinite double jump. pyro's jet. or classic bullet jump




Difficulty: Very hard
(UPDATE: i found out there's invisable ramp around to get into other side of square which were starts the demo's toilet parkour! its quite hard to use that ramp UPDATE 2: you dont have to use jump. its connected to top of portal frame.)

There was no instrucition screenshots. if you wait 20 minutes(i guess) random Event will be triggered. if ufo comes up try to get crushed by it. you will go to ufo room
Difficulty: Very hard

its hard to get. i wont explain here. but there's my another guide to there
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1699950284
Difficulty: Super Hard

Difficulty: Almost impossible
To open this gate located at left side of bridge at main area
you need to light up 4 torches(or 5 i dunno)
first one located at sanic limits
(REMEMBER: go my guide which is listed in music room. find out some details about how +use works. you need +use to light up torches!)
how to get in sanic limits?
go through a window at blu spawn. you will see top secret door. enter the codes.
second torch located at act 2 of music room puzzle
third torch located at ancient tombstone(to get in there. go to shooting range. search for the lighting error if you found it. bingo! its a fake wall)
fourth is located at secret chair room. can be get there easily. use this fake wall you will reach to an room with portal called "secret area"
after that you will be teleported to lava area. literally. its really possible to escape there by using 3 of teleport areas
Here's my guess of what roads could be.
you will been teleported to secret chair room.
fiveth located at secret egypt like place
my guessing is supposed to be another torch at mine room
after that the gate will be open.
you will be teleported to maze. here's preview
after finding the teleporter. you will be welcomed with HARDEST parkour in this map
Good luck beating this parkour

Difficulty: impossible
So first thing is hit all 3 shrek secrets in this place
first one is located at olympus. its real pain to get there
next button is located at ufo room. requies crouch jumping so many times. there's invisable panels that leads to there. have fun with your earrape boy sherk
next one at sanic limits. i will show you how to get there later. go to shrek barrel(aka the barrel near to music room door) go down.
this portal will be appear(its not open because im too lazy)
get into there. you will guarranted with music room with only 3 musics. great. thanks.