I finished all 72 stages, and I only had to cheat one single time, so I’m kinda proud of myself. It’s actually not that hard once you remember that the dragons can’t fire upward, so staying above them helps. The other trick is to zig-zag back and forth when enemies are closing in on you. I could have the enemies right on top of me and still scratch-out enough distance to take them out using the autofire on the harpoon.