Instructions
Jump from platform to platform to avoid the boss as it swims by or makes small jumps.
Watch for Bessie Bass to make a huge leap into the air. The boss makes a fake jump before the leap. Move to the adjacent platform from where the boss leaps.
Aim the cursor directly upward. Once the boss is overhead with its mouth open, fire directly into its mouth. After two hits, the pattern changes.
Watch for Bessie to make a series of small jumps before the big leap. Get into position and fire directly upward into the boss's mouth again. One more hit defeats the boss.