I'm glad you liked my game :)
When designing levels I remember thinking that I'm going to make them on the easier side so that everyone will be able to finish the game. That did not turn out so well :P
This is unfortunately a known issue that can happen sometimes when 2 or more enemies get stuck and push eachother circling around the level not getting closer to you. When that happens you may run around for a while and may find them eventually or press K to kill yourself and restart level or press ESC and go back to menu.