Heavy Cannon I
-Heavy Cannon II
--Heavy Cannon III -> Heavy Cannon IV
--Missile Launcher I -> Missile Launcher II
-Impact Cannon I
--Impact Cannon II -> Impact Cannon III
--Ice Cannon I -> Ice Cannon II
-Double Heavy Cannon I
--Double Heavy Cannon II -> Double Heavy Cannon III
--Sonic Pulse I -> Sonic Pulse II

Quick Cannon I
-Quick Cannon II
--Quick Cannon III -> Quick Cannon IV
--Flamethrower I -> Flamethrower II
-Sniper Cannon I
--Sniper Cannon II -> Sniper Cannon III
--Laser I -> Laser II
-Long Range Cannon I
--Long Range Cannon II -> Long Range Cannon III
--Electric Cannon I - Electric Cannon II

Double Cannon I
-Double Cannon II
--Double Cannon III -> Double Cannon IV
--Boomerang I -> Boomerang II
--Barrier Down
---Barrier Left -> Barrier Up
---Barrier Right -> Barrier Up
-Double Quick Cannon I
--Double Quick Cannon II -> Double Quick Cannon III
--Machine Gun I -> Machine Gun II
-Triple Cannon I
--Triple Cannon II -> Triple Cannon III
--Poison Spray I -> Poison Spray II