Top Ten Hardest Super Paper Mario Levels
These are the hardest, most tedious, most confusing and longest levels in the game. (They were fun and awesome still)
This was far too long. I had to look up how to do it, as it was almost impossible without a guide.
It takes forever. It's confusing. You have to go back and forth. Worst chapter ever!
Despite the fact I added a different level (8-4: Tippi and Count Bleck), I vote for this one. 8-4 was hard enough, but this?

That stupid Black Apple - the worst apple in the game - wakes up Peach. Well done for that sarcastic humor!
This is the hardest in my opinion. It's so confusing, long, and full of those annoying ruff-puffs.
All the other levels went by in 15-30 minutes for me. This one, however, took me 3 days.
It sounds very intimidating. You do indeed have to fight 60+ people, each with their own room. Some don't fight you, others give you riddles, and some are just scared that their world is going to be demolished by a gigantic black hole consuming the entire galaxy. But who can blame them? I would not be happy in that situation either.
Anyway, it's mainly just annoying and long.
Not as hard as the Thousand-Year Door Pit of 100 Trials, but hard indeed!
Not hard, just takes a long time.
I think the complicated flips are a bit much.
I liked the boss but hated him at the same time. Very hard, hardest one so far. I haven't played Chapter 8 yet, so the final boss might be harder, but King Croacus was a pain.
Let's just say I went into the boss completely forgetting that I had the throw pixel.
Long and complex. But the level music, the battle with King Croacus, and the boss music are awesome.
This isn't that bad, but if you fall down the Dotwood Tree, you will likely have to start over.
Not really hard, but it is tedious if, and only if, you fall down.
I had a big headache trying to complete this level.
This one has frustrated me because of the constant sarcastic humor! Paying 1,000,000 rubees feels like a huge debt until you search the internet and uncover a vault containing a million rubees. I don't think I have ever completed this without searching the internet.
Even still, you need to prepare for the pain as you will be staring at the screen, constantly collecting rubees for valuable codes that can help you out. Can you guys imagine what it would be like to manually collect those rubees? This was absolutely terrible, and don't even get me started on the sarcastic humor they chucked in throughout the game!
Why isn't this in the top 3? It's the final level in the game! That maze is a pain, and then you've got to fight two of the hardest bosses in the game!
The Newcomers
This one was difficult. It has tons of rooms and is extremely long.
Most of the difficulty is trying not to crack and leave early. It's not hard at all if you really focus. It is very long and boring, though.
I believe the Flopside Pit of 100 Trials is harder than the Flipside Pit of 100 Trials.
No guide. Tippi tells you to just follow your instincts. You go around random portals and end up back where you used to be. It's a maze!
This level isn't really that difficult, but you will need a lot of coins going into it. To get Squirps' chocolate, you need at least 25 coins to get a Sweet Choco Bar. Usually, I get a Golden Choco Bar for myself, but it costs 100 coins!
This is one of the reasons why Chapter 4 is my least favorite chapter in the game (the other reason being 4-2). You just swim and go through portals to get some chocolate for your Squirp dude. As if the space environment wasn't already bland enough.