Evade his fire attacks and only attack him when he is turned. Once he is weak he will use a strong combo which will cover the entire screen if completed and take off two on you if it hits. He will launch various fireballs. Try getting laser beams to take off damage. This Boss normally requires two to four lives to kill.
Start the game with the /cheat command line parameter to enable cheat mode. Then, activate the following cheats by entering the corresponding codes:
CHEAT FUNCTION - CHEAT CODE More ammo for player one - F1 More cow bombs for player one - F2 More lives for player one - F3 More ammo for player two - F5 More cow bombs for player two - F6 More lives for player two - F7 Level skip - F9
During single player mode, you can get more firepower and more lives by setting the controls of both players to be exactly the same. For example, player one - Fire=Space and player two Fire=Space. By doing this, you can focus on one blob, but the other blob will move with and shoot with you. This kills more enemies and gets you to higher levels. A great idea is to set the special key to a different button for each player so that you can get double the cow bombs.
The following is a description of each weapon's strengths and weaknesses. The attack speed rating is an estimate of about how many times that weapon shoots every minute:
WEAPON - DESCRIPTION Gun - Average in large crowds and weak against Bosses (weak damage). Its attack speed is about 1000. Machine Gun - Good in large crowds and average against Bosses (medium damage). Its attack speed is about 1000. Shot Gun - Weak in large crowds and good against Bosses (medium-high damage). Its attack speed is about 45. Flamethrower - Very good in large crowds and against Bosses (high damage). Its attack speed is about 3500. Laser Beam - Legendary in large crowds and against Bosses (very high damage). Its attack speed is about 3000. Cow Bomb - One hit K.O. in large crowds and ultimate damage against Bosses (ultimate damage). Its attack speed is about 50.
Complete a level with full HP (receive no damage) to get a Laser Beam (Blip) or a Flamethrower (Blop) for the next level. They are very useful for bonus levels to get extra help on the following levels.