1st.In Al Bhed camp,talk to the pilot select(Oasis)Is there
2nd.Visit Besaid Beach .Cactuar is there
3rd.Guadosalam.Enter the Chateu and go into the secret area where you had your last fights against the Syndicate.In one of the rooms you'll spot a funny chest.
4th.Calm Lands-Bridge between Gagazet and Calm Lands screen.Two cactuars riding a chocobo.
5th.Same as 4th.
6th.N-most end of Thunder Plains-North,opposite of Cactuar stone.
7th.Kilika forest.Go like this-N over the bridge then E.First tree you'll see bending over the water,press Circle.
8th.Gagazet.If you have got Episode Complete then you will appear near the top,you need to dropdown,then go right to G-Prominence.If you haven't achieved Episode Complete you'll appear in the base,use teleport to go there.
9th.Kilika in Dona's House.
10th.Return to cactu's domain and deliver the 9th cactuar.Talk to 10th Cactus then address the cactus marked as red square in minimap and pick (We'll look for him)Prepare!!Fililost