For the testers, here is the D18.9 update:

– Fixed a rare glitch with the 7th giant boss that prevented it from taking damage. This fixes the last major bug in the game that would prevent someone from completing the game.
– Fixed fuel barrels in bonus rounds so they explode when they are supposed to.
– Fixed a rare crash when bombing the 5th boss’s “laser web.”
– Modified base color of enemies for Pacific-4 from blue to pink to stand out more from the background
– Modified the first bonus stage from 50 barrels to 60.
– Whirlpools now scroll twice as fast.
– Modified Pacific-5 level.
– Modified Pacific-5 background to something fresh.
– Modified Pacific-4 background to the original Pacific-5 background.
– Modified Pacific-7 level.