You have two modes: red and blue. When you are red, you can go through red enemies. When you're blue, you can go through blue enemies. Green enemies kill you either way. Space to change color. :)
KP part 2: https://scratch.mit.edu/projects/630940250/ KP part 3: https://scratch.mit.edu/projects/632756099/ KP part 4: https://scratch.mit.edu/projects/640425165/ KP part 5: https://scratch.mit.edu/projects/652678035/