what do u hate about challenge mode?

[Ton]

Is that forest 2? If so, I don't think u need to open that up, except for items, but where u go is the place on the bottom right hand corner of the map, I think it is there, and then make someone stand on the switch and let the other people go through. There will be a warp there, and then take it, and then there will be another warp. DONT take that one, but instead look behind u and there will be a warp there. Go take that, and then I think u can make your way from there. I hope this helps.