adding or removing frames should be perfectly fine, but double check with typh. i was tempted just to reupload it with more frames once i saw people complain, but eh

and yes, style isn't being taken into account. as long as you're the fastest.

needed to go "through all the obstacles" just means you need to some some way to clear them without exiting the course to go around them, e.g. you can't just walk over the grass to the finish and just climb the rope.

timer starts as soon as frames start.