Hmm what happens if you both try another port? Perhaps something higher than the default value.
And if you skip Hamachi and instead set up port forwarding in the router and then use your normal ip found on https://www.whatismyip.com/ ?
Also found this bug:
___________________________________________
############################################################################################
ERROR in
action number 1
of Step Event2
for object WaveSpawner:
Data structure with index does not exist.
at gml_Object_WaveSpawner_Step_2
############################################################################################
--------------------------------------------------------------------------------------------
stack frame is
gml_Object_WaveSpawner_Step_2 (line -1)
which crashes the game (it has happened to me twice)
This error too (lol):
___________________________________________
############################################################################################
ERROR in
action number 1
of Step Event0
for object obj_electricBalloon:
Data structure with index does not exist.
at gml_Object_obj_electricBalloon_Step_0
############################################################################################
--------------------------------------------------------------------------------------------
stack frame is
gml_Object_obj_electricBalloon_Step_0 (line -1)