Hi, yes, I got to that platform and collected everything I found there, I am not sure if the golden trophy there is collectable, though. I think it is the kind of trophy that just appears, the same style as that for lev 5 mountain climbing. I then jumped down to another star and then fell down (missed the last "stair" star), but I think it shouldn't matter. Or is it needed to complete startrekking by using all of those still stair stars?
BTW: is it possible to go clockwise in level 2 in original version of AFF, or you disabled grenade jumping there also in the past?