Finished replaying Donkey Kong Country 2 (Quick levels rankings)

Great Levels

Target Terror
Haunted Hall
Kannon's Klaim
Ghostly Grove
K. Rool Duel
Lockjaw's Locker
Hot-Head Hop
Mainbrace Mayhem
Krockhead Klamber
Rickety Race
Windy Well
Klobber Karnage

Good Levels

Web Woods
Barrel Bayou
Rattle Battle
Castle Crush
Squawks's Shaft
Pirate Panic
Hornet Hole
Topsail Trouble
Bramble Blast
Gusty Glade
Screech's Sprint
Jungle Jinx
Animal Antics
Kleever's Kiln

Average Levels

Lava Lagoon
Gangplank Galley
Krockodile Kore
Slime Climb
Kudgel's Kontest
Bramble Scramble
Toxic Tower
Fiery Furnace
Mudhole Marsh
Clapper's Cavern
Kreepy Krow
Krow's Nest
Parrot Chute Panic
Chain Link Chamber
Red Hot Ride

Bad Levels

Black Ice Battle
Arctic Abyss
Rambi Rumble
Glimmer's Galleon
King Zing Sting
Stronghold Showdown

Still probably my favorite 2-D platformer ever. The level design is superb. There's very little bad in this game, and even then, I wouldn't say anything here is abysmally bad. It's just bad relative to how great the rest of the game is.