Sound and visuals were really nice, and I liked the variety of boss designs. The insta-explode on collision with them was kind of annoying though, as were the beams that basically caught you and drained your health if you hit them once. It would also be good if the menu remembered what boss you were on so that you don't have to scroll along each time. I'm nitpicking though, it's great overall. A shame you cancelled it.

It's nice but you had to finish it :/

___________________________________________
ERROR in
action number 1
of Step Event
for object obj_boss4:

Error in code at line 18:
if x < obj_player.x
^
at position 24: Unknown variable x