Shuriken individual particle path

I found out that shuriken is now able to collide with the world so I started playing around with it. I attached a particle system to my camera and made a script which lets me shoot a particle. However, when I rotate the particle system, every particle that has already been emitted also changes position.

I want to be able to shoot a particle, turn around, shoot another particle while the first particle keeps going in the direction he was heading. Is that possible?

Simulate in World space instead of Local space.