put your sound effect and music events in groups and enable disable the groups. Or create a global variable sound effects on and music on and always check this variable when an action for sound is called.

Add a new animation to your object add the new image to the new animation and change the collision mask for that animation.

manual

Your every 4 seconds event is where the problem lies.

It would probaly be much easier to use animations for your ninja instead of spawning new objects every time.

Also you should add conditions so when the ninja is destroyed the other events, like the flash and stuff aren't executed.

For the three stars you could probably just use three instances of the same star.

for the fade in fade out it's probably the easiest to use a very small tiled background stretched out over the layout and change it's opacity over time.

Wouldn't player.x-startingline.x work?

Like I said, you will have to do it in two steps.

First set sprite 2 to the imagepoint you want, calculate the x and y distance from the sprite2 imagepoint to the sprite2 origin (or the intended imagepoint to set position to) and adjust it's position accordingly.

I'd like to help but I'm not able to open your capx for it has third party plug-ins I don't use.

on start of layout destroy object and you're done.

first set sprite2 to imagepoint 1, than calculate the x and y distance from sprite2 imagepoint 11 to sprite1 origin and offset sprite2 by that distance.

sprite set x - object.imagepointx(11)

sprite set y - object.imagepointy(11)

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