Unlock the following modes by performing the corresponding tasks:
MODE - HOW TO UNLOCK
Boss Attack - Pass the game with the best ending
Curly Mode - Get Curly's Panties
Nemesis Challenge - Get the Nemesis weapon
Sanctuary Time Attack - Pass the game with the best ending
Wind Fortress - Pass the game with the best ending
<3 - Obtained the Life Pot!
A Fine Blade - Obtained the Blade!
A Gift from Santa - Obtained the Fireball!
Arm Bar - Obtained the Arms Barrier!
Armored Feline - Defeated monster x!
Ate A Red Flower - Defeated toroko...
Big Fish - Defeated ironhead!
Boss Attack A Rank - Completed Boss Attack in Less Than 10:00
Boss Attack B Rank - Completed Boss Attack in Less Than 12:00
Boss Attack C Rank - Completed Boss Attack in Less Than 15:00
Boss Attack S Rank - Completed Boss Attack in Less Than 8:00
Cave Story Clone - Defeated g-clone!
Cold Hearted Snake - Obtained the Snake!
Count to 290 - Obtained the 290 Counter!
Coward - Bad ending
Curse Broken - Best ending
Doggy Style - Beat Omega with Jenka's Puppy
Don't Get Lost - Obtained the Map System!
Ducking Awesome - Obtained the Nemesis!
Evil to the Core - Defeated the Undead Core!
Fish Preserve - Spared eggfish
Freakin' Laser Beamz - Obtained the Spur!
Ghost in the Clinic - Defeated puu black!
Girly Gun - Obtained the Machine Gun!
Happy Birthday Pixel! - Played Cave Story on April 29th!
Hate Made Flesh - Defeated ballos!
Heart of the Island - Defeated the Core!
Heavy Medal - Defeated the Red Ogre!
Here's Johnny! - Obtained the Alien Medal!
Home, Sweet Home - Returned Mister Little back home
House Call - Defeated the Doctor!
Huge Toad - Defeated balfrog!
I Like It Hard! - Completed hard mode
I'm Juggernaut... - Found and collected all Life Capsules
I've Got Your Back - Obtained the Iron Bond!
Kings of Power - Accumulated XX,XXX of damage
Ladies' Man - Obtained chako's lip stick!
Little Man - Found mister little!
Machine Monster - Defeated omega!
Magic Missile - Obtained the Missile Launcher!
Mimiga Bodyguard - Defeated curly...
Mimiga Hero - Mask mimiga ending
Miserable - Defeated misery!
Mr. Clean - Obtained the Bubbline!
Muscle, MD. - Defeated the Muscle Doctor!
Only If You're Greedy... - Defeated the Twin Dragons!
Panty Raider - Obtained curly's panties!
Pea Shooter - Obtained the Polar Star!
Rabid Mimiga - Defeated igor!
Return the Favor - Saved curly brace
Rock Bustin' - Defeated balrog, yet again...
Sanctuary A Rank - Completed Blood Stained Sanctuary in Less Than 4:00
Sanctuary B Rank - Completed Blood Stained Sanctuary in Less Than 5:00
Sanctuary C Rank - Completed Blood Stained Sanctuary in Less Than 6:00
Sanctuary S Rank - Completed Blood Stained Sanctuary in Less Than 3:00
Shtuff Happens - Normal ending
So easy, so so easy! - Completed easy mode
Supa Star! - Obtained the Whimsical Star!
Super, thanks for asking! - Obtained the Super Missile Launcher!
Swollen Mech - Defeated heavy press!
To Hell and Back - Completed blood stained sanctuary
Toroko Wins! - Beat by Toroko
Tow Me A Rope - Obtained the Tow Rope!
Turbocharged! - Obtained the Turbocharge!
Unstoppable - No life capsules (best ending)
Untouchable - No life capsules (good ending)
Wanna Fight? - Defeated balrog!
Weapons of Mass Destruction - Found and collected all Missile upgrades
What A Fun Guy! - Obtained ma pignon!
What Are YOU?!? - Defeated balrog, again...
Who's the Boss? - Completed boss attack
Wind Fortress A Rank - Completed Wind Fortress in Less Than 5:00
Wind Fortress B Rank - Completed Wind Fortress in Less Than 6:00
Wind Fortress C Rank - Completed Wind Fortress in Less Than 7:00
Wind Fortress S Rank - Completed Wind Fortress in Less Than 4:00