The famous publication Vulture has compiled a list of the most difficult game levels in history. Below is the top 10 most difficult levels out of 100 positions. 
Journalists compiled the list based on the following criteria:
the game was supposed to be released on PC or consoles in the US;
mobile games or slot machines were not included;
Each level should have a clear beginning and end;
side quests or certain sections of maps in open world games were also considered game levels;
the target audience was taken into account - if the game was for children, then it was assessed how difficult the level was for children;
difficulty was considered at the time of the game's release.
In addition to these levels, the full list also includes: levels from Darkest Dungeon, Call of Duty: Modern Warfare 2, “Club” from Sifu; Return to Hirata Estate from Sekiro: Shadows Die Twice, Chasing Lee from Assassin's Creed III, locations from Bloodborne and Elden Ring, Argent D'Nur from Doom, Blue Creek Apartments: Coin Puzzle from Silent Hill 2, Wrong Side of the Tracks from Grand Theft Auto: San Andreas, dungeons and raids from World of Warcraft and Destiny 2 and much more. The full list can be found on Vulture's website.
10. Invading Hell - Devil May Cry 3 (2005)
9. Alien's Lair - Contra (1987)
8. Chamber 15 - Portal (2007)
7. Castle Water Hall - Resident Evil 4 (2005)
6. Through the Fire and Flames - Guitar Hero 3 (2007)
5. Jungle - Spelunky (2009)
4. Anor Londo - Dark Souls (2011)
3. The Kid - Super Meat Boy (2010)
In third place is The Kid level in Super Meat Boy, which requires a lot of very precise jumps, including when players are rushing towards spiked obstacles.
2. The Mountain - The Witness (2016)
Coming in second at the top was The Mountain from The Witness, which could keep players busy for hours or even days with its challenging puzzles.
1. Turbo Tunnel - Battletoads (1991)
First place in the ranking was taken by “Turbo Tunnel” from Battletoads, released in 1991. According to journalists, this level required players to react so quickly that most children tremblingly remember how they completed the game and how they crashed into obstacles a split second before the next checkpoint.
