Hadn't done this one in a while and thought I'd see how far I'd get in one go without the use of cheats or anything. Might need to be retimed but I started the timer from when I loaded into the first level as it had to reload stage 1 for some reason.

Turns out once you know where the enemies come from it's easy and you can beat the game no problem.

Now only if the third game was easy XD