I suppose it can work in coop play, as at least it is not I who can do the task, but I always approach RPGs a single player experience first.
I just want to draw the distinction between two concepts, that are certainly connected, yet very different. On the one hand, you have the
number of adventurers : is it a
Party of adventurers/companions, or a
Solo adventurer ? On the other hand, you have the
number of players : is is
Single-Player or
Multi-Player ?
I feel (perhaps wrongly, you tell me), that in the first part of your post you are saying that you're not fond of a Party-based RPG (with a party that can have multiple skills, instead of a Solo adventurer who would make do with what they themselves are good or bad at). Whereas in the second part you sort of say that you prefer Single-Player RPG.