In the first half of Jungle have Bill take the low route, Lance take the high
Finish Stage 2 with Bill not allowed to prone or Lance to jump (P2 can't press A button)
Reach the 3rd boss with P1 only shooting horizontally and P2 vertically
Destroy both Arms of the Shadow Beast at once (Waterfall)
Finish Stage 4 with Lance not allowed to prone or Bill to jump (P1 can't press A button)
Clear Snowy Field without Lance shooting or letting him die
Kill 5th boss with P1 only shooting up and P2 only horizontally (no jumping)
Clear Energy Zone without Bill shooting or letting him die
In the first half of Hangar have Lance take the low route, Bill take the high
Finish Stage 8 allowing Bill only to shoot the head, Lance to shoot the heart
Collect S-guns for P1 and P2 and kill 25 enemies each without losing a life
Collect L-guns for P1 and P2 and kill 25 enemies each without losing a life
Finish two stages with Bill and Lance using Fire Gun
Collect (R)apid Fire for Bill and Lance and survive the rest of the stage
Borrow a life after reaching Game Over
After the end of base 1 cross paths from the furthest distance
Complete the game with Bill only getting Spread, Lance only getting Laser
Finish the game in 2 player mode without having Game Over
Finish the game in 2 player mode without having Game Over (no Konami Code)
Without S-Gun kill both Phantom Image Cores at once (Base 2 boss)
In a 2 player game, survive a mission alone on one's last life
Without either dying collect 5 new weapons while Lance is stuck with default
Without either dying collect 5 new weapons while Bill is stuck with default
Open the entrance to Base 1 together
Finish the game together
Destroy the entrance to Base 1 together without K-code
Open the entrance to Base 1 without either dying on the stage
Finish the game together without K-code
Leave base 1 together
Destroy the Waterfall boss together
Destroy the UFO of Snow Field together
Leave base 2 together
Destroy the Armored Giant together
Open the entrance to Alien Lair together
Leave base 1 together without K-code
Destroy the Waterfall boss without K-code
Leave base 2 together without K-code
Destroy the Armored Giant together without K-code
Destroy the UFO of Snow Field without K-code
Open the entrance to Alien Lair together without K-code
Leave base 1 together victorious without either dying on the stage
Complete Waterfall boss without either dying
Leave base 2 together without either dying on the stage
Destroy the UFO of Snow Field without either dying on the stage
Destroy the Armored Giant without either dying on the stage
Complete Alien Lair without either player dying on the stage
Have both players each hold a score of 25k or more
Have both players each hold a score of 50k or more
Have both players each hold a score of 100k or more
Open the entrance to Alien Lair without either dying on the stage