Flying Shark - ZX Spectrum Walkthrough

This was joint 28th on WOS&top 100 games (level with The Great Escape) so I thought I should give it a go. It&one of the better shooters I&played on the speccy but the monochrome graphics do make it hard to see what is going on sometimes. This is at 1.2x speed and the game loops back to level 2 after level 4.