Here is everythang I know you need A action reaplay DS if you don't have one get one NOW!!!!!!!!!!! when you have one use the size modifier code to make him gigntic then use the be luigi code after that go to the last level and defeat bowser and his son any way you want then it will show princess peach kissing luigi's but I'm not lieing.2 for this one you will need a frend use your action reaplay then use the 99coin cheat go on mario VS luigi and verse your frend every time you get a coin a flying turtle will appear above your head!x)ok last of all for this one you don't need an action reaplay but you will need a frend go to mario vs luigi and battle your frend at the pipe place become mega mini mario and go all the way to the right or left side of the screen and try to jump between the two pipes into the gaps then you will be on top of the feld there will be many coins up there weel 8 the fun part is your frend will never find you or kill you or smush you if he gets a mega mushroom plus when you get all 8 coins up there an item will fall out of the sky and your frend will freak out you got to try all the thangs I told you please teel others and vote me thumb up.