there is much, much more to the tutorial- there is nothing else up there so don't worry about that, but there is a whole multiple hour minimum experience hiding in there. If you want tips (you'll need some, at least these two, most likely), I'll post some here, MINOR SPOILER WARNING >>>>>>>>>
There is a secret panel in the room you spawn in,
and one of the tutorial messages gives you 3 of 4 numbers you'll need.