This was amazing and creative! Looooooved adding in all those weapons, but it didn't feel too easy - the progression on this was great. Awesome job all around!!
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(Mine crashed a few levels in, got a handy dandy error log here if you want it.)
ERROR in action number 1 of Step Event0
for object o_bullet:
Variable <unknown_object>.y(1, -2147483648) cannot be resolved. at gml_Script_get_collision_y
gml_Script_get_collision_y (line -1)
gml_Object_o_bullet_Step_0