A little surprise, pretty tough, my highscore is 5029 after numerous attempts. The game still surprise me by a not yet seen enemy. Crashed when approaching a boss though:
ERROR in
action number 1
of Draw Event
for object obj_Sporit:
Variable obj_Sporit.IsHit(100003, -2147483648) not set before reading it.
at gml_Object_obj_Sporit_Draw_0
gml_Object_obj_Sporit_Draw_0 (line -1)