OK SO
mushroom, go to cave area at farmland, talk to shopkeeper guy
he gives you a ring for your sword
go to dyne he gives you a potion
go into the cave do the thing, done
other one is you have to get to the top of the mountain
go to mountain
go into cave from mountain
find the guy looking for key
use a pickaxe to dislodge the key
get shiny ore
follow minecart to rock area at bttm
trade shiny ore for key to weird lizard thing
go to top
get a bottle from garret after talking to arkarn
get water at mountain top
done!