Halo 3 Legendary.... Takes me hours to finish one level.
Touhou Imperishable Night... Anything above Easy.... and easy itself.... inb4 EasyIs4Children.jpg
Devil May Cry 4 on harder difficulties... I forget the names of them atm.
Maple Story's grindfest leveling system... (Though Big Bang patch has eased it a large amount)
Oh, and the Metroid Prime Trilogy (I mean the first two on GC and Corruption, not the watered down versions ported to wii) on Hyper Mode.
SPOILER
"You face opponents who have never known defeat, who laugh in alien tongues at your efforts to survive. This is suicide." - Halo: Combat Evolved and Halo 2 Description... IT IS SUICIDE!
Touhou Imperishable Night... Anything above Easy.... and easy itself.... inb4 EasyIs4Children.jpg
Devil May Cry 4 on harder difficulties... I forget the names of them atm.
Maple Story's grindfest leveling system... (Though Big Bang patch has eased it a large amount)
Oh, and the Metroid Prime Trilogy (I mean the first two on GC and Corruption, not the watered down versions ported to wii) on Hyper Mode.