Clear Chill Penguin's Stage using only the Buster weapon and without taking damage

Clear Launch Octopus' Stage using only the Buster weapon and without taking damage

Clear Armored Armadillo's Stage using only the Buster weapon and without taking damage

Clear Storm Eagle's Stage using only the Buster weapon and without taking damage

Clear Spark Mandrill's Stage using only the Buster weapon and without taking damage

Clear Sting Chameleon's Stage using only the Buster weapon and without taking damage

Clear Boomer Kuwanger's Stage using only the Buster weapon and without taking damage

Clear Flame Mammoth's Stage using only the Buster weapon and without taking damage

Beat the game without obtaining the Dash Upgrade (Use Password: 4764-8488-7716)

Beat the game using only the Buster weapon, without picking up Sub Tanks, and without letting your health drop below 25%

Obtain the Heart Tank in Boomer Kuwanger's Stage using the ancient technique known as 'Iceless' (See Comments!)

Get to Sigma's last battle using only the Buster weapon and without charging it, and without picking up any Sub Tanks and Heart Tanks

Let Vile kill you at the start of the game

Clear any stage without taking damage and without firing your weapon

Obtain the Head Upgrade before obtaining the Boots and Arms Upgrades

Obtain the Heart Tank in Spark Mandrill's Stage before obtaining the Boots upgrade and without using weapons

Defeat Bospider using only the Buster weapon, without taking damage, and without using the Hadouken technique and without pausing the game

Defeat Rangda Bangda using only the Buster weapon, without taking damage, and without using the Hadouken technique

Defeat D-Rex using only the uncharged Buster weapon, without taking damage, and without using the Hadouken technique

Win the 3 Sigma fights without taking damage and without using the Hadouken technique

Go through SF1 no damage no Hadouken and buster only (weapons allowed ONLY on bosses)

Go through SF2 no damage no Hadouken and buster only (weapons allowed ONLY on bosses)

Go through SF3 no damage no Hadouken and buster only (weapons allowed ONLY on bosses)