Storyline
None, it better be themed like a pool game, if its adventure with no stoyline then it sucks.
Some, the worst option, it means you are trying and failing. Don't go halfway
Lots, This is what you want, make sure your developing it.
Challenge
MUST HAVE
Character
Pretty much same as storyline. Except some is alright.
The Characters Evolving is just kindof a bonus thing that, if its thrown in (see Mattias!?) it adds at least 30% more on the story, if its not it doesn't take anything away (THE CAVE).