I’m actually new at this stuff, but hopefully this helps.
One Shoot = turn off Looping
Autodestuct = create a new Javascript, and attach this to your particle
#pragma strict
function Start () {
}
function Update () {
if (!particleSystem.IsAlive()){
Destroy (this.gameObject);
}
}
Tangent Velocity = I think you can get the same effect if you mess around with Shape, which is in between “Emission” and “Velocity over Lifetime”, as well as messing around with the Start Speed