Konami's Entrance Fee
Beat the default high score of 20,000 points
Wartime Songs
Access the Sound Mode
Strength of a Legion
Enter the extra lives code on the title screen
Gates of Fort Firestorm
Clear Area 1
Warped Mind Command Center
Clear Area 2, without using stage select
Tropics of Torture
Clear Area 3, without using stage select
Lair of the Jungle Aliens
Clear Area 4, without using stage select
Massacre Mountains
Clear Area 5, without using stage select
Jagger Froid's Defense Line
Clear Area 6, without using stage select
Radioactive Lava Fields
Clear Area 7, without using stage select
Red Falcon's Poison Palace
Clear Area 8 and beat the game, without using stage select
Perfect Infiltration
Clear Area 1 without dying in single player mode
Command Center Immunity Protocol
Clear Area 2 without dying in single player mode
Jungle Torture Survivor
Clear Area 3 without dying in single player mode
Lair Purge Specialist
Clear Area 4 without dying in single player mode
Expert Mountaineer
Clear Area 5 without dying in single player mode
Unscratched Shock Trooper
Clear Area 6 without dying in single player mode
Certified Hazmat Operative
Clear Area 7 without dying in single player mode
Pure Lethal Antidote
Clear Area 8 without dying in single player mode
Spread's Got Competition
Defeat any boss using the Laser in one player mode
Marshland Ghost
Cross the swamp section in Area 3 in single player mode without shooting or dying
Spider Wrangler
Ride from one side of the screen to the other on top of the Area 3 miniboss in single player mode
Earthquake Drill
Cross the Area 3 earthquake section in single player mode while holding right the entire time
Chain of Command Execution
Defeat the Area 2 boss without killing either red soldier or using the extra lives code
Sensor Core Isolation
Destroy all 4 turrets of the Area 3 boss without damaging its core and without using the extra lives code
Armed to the Teeth
Eliminate all but the two outermost laser cannons on the Area 4 boss without using the extra lives code
Can't Get Enough
Beat the second loop without using the extra lives code
Super Ace Soldier
Beat the game without using the extra lives code
Super Gunless
Beat the game in one player mode using only the default weapon and no extra lives code
Gun Hurdling Champion
Reach the fourth upward slope in Area 1 without killing green soldiers or destroying turrets
Tough Guys Don't Look Back
Clear Area 2 without going backwards or using the extra lives code
Iron Waterfall Challenge
[1P Only] Reach the boss in Area 4 without shooting up, down, or diagonally
Such an Ugly Thing
[1P Only] Defeat the final boss while staying at the left edge of the screen without using the Spread and without using the extra lives code
Grounded AA Specialist
Defeat the Area 1 boss in single player mode without jumping or using the extra lives code
Lethal Interjection
[1P Only] Cross the spiked ball corridor in Area 6 without shooting or dying
Massacre Mountaineering
Reach the top of the cliff section in Area 5 while staying above the bottom third of the screen
Come On Down, Everybody!
From the top of the Area 5 cliff, reach the boss without firing or dying
Tough Guys Still Don't Look Back
[1P Only] Clear Area 6 without going backwards
Jagger Floyd's Sinister Smile
Deal heavy damage to the Area 6 boss without destroying any of its projectiles or the snake
Death Perception
Reach the boss in Area 7 without jumping and without shooting up, down, or diagonally
Save the Face-Huggers!
Reach the Area 7 boss without killing any hatchlings or using the extra lives code
Alien: Congregant
Reach the boss in Area 8 without killing any running aliens
Rooted Rifleman
Defeat the Area 7 boss using only the default gun without jumping, dying, or using the extra lives code in single player mode
The Right Way Up
Ascend Area 4 on the right half of the screen with exceptions allowed for the second elevator access platform or during knockback and invulnerability. Extra lives code not allowed
Peak Trigger Discipline
Reach the top of the Area 5 cliff without eliminating any turrets or running soldiers and without using the extra lives code
To Hit or Not to Hit
Beat the Area 5 boss without damaging any of the skulls and without using the extra lives code
The Shield of Compassion
Reach the Area 6 boss without eliminating any enemies or dying in single player mode
Save the Beast for Last
Using the default gun, destroy the snake on the second form of the Area 6 boss without hitting the boss itself or using the extra lives code
Egg Room Escort
Reach the egg room in Area 7 without killing any running soldiers or using the extra lives code
You Shall Not Pass
Reach the boss in Area 8 without letting any running soldiers cross from one side of the screen to the other or using the extra lives code
Grand Finale Fireworks
Defeat the Area 8 boss in a single-player game after firing 30 projectiles in a single life while standing on its head
It's a Secret to Everyone
Acquire the Spread Gun in Area 1 without using the extra lives code