If i could get the one x2, 4 multiplier for (adjustable) damage, health, silver (money that can be collected), coupon (use to buy special item at mall , can be gained from normal play, daily task, but in minute quantity) ,it will be very appreciated.

If silver (coin that can be collected) alone is enough.

Another currency is GOLD, which is purchased with money first.

Unlimited stamina would also be nice.

I have previouosly make a mistake by using all my 4k gold for an event, where i misread the content. I think that being in top100 is enough to obtain the special pet, but there are special condition for the pet, which is to have 700 skull.

I think if the game is thoese online only ones you may as well give up. it very likely they have all the player data on the server side.