Nice art! The audio also contributes a lot to its aesthetics! it seems a simple thing but I liked how you made the flying enemies's vigilance area dynamic. The vigilance area was all thorough code?
Thanks for your comment! I used the A* path-finding algorithm for the enemy chase AI and the vigilance area should extend to the whole map actually, if you stay in the enemies’ line of sight - but since the flying enemy has a high speed, it is the most likely to keep chasing you and keep up you! :3
