That's enough for the beginning. Gk doesn't have more either. Just focus on the "storyline". I mean make sure that when you release iGK, that there is some sort of beginning, introducing you, like in Zelda or other rpgs. Make sure that you know where to head as a next to do a quest, dungeon or whatever. Make it so that you can finish quests and the npc tells you where to go next "go to this dude and he will tell you where you should head next so you "can save the princess"". Something like that. There is nothing more frustrating in a RPG, than not to know what your next goal is. The rest will work by itself (pk, trading, etc).
