I find that a little odd, as my rogue (as previously stated) tore @#$% apart.
How many other meleers did you have? Did you use stealth to get advantage (and thus SA)? Did you use the array, or roll for stats? Did you realize that for any skill check you cannot roll below a 10 (At GenCon I was apparently the first person all weekend to USE Take 10 at that GM's table for the playtest)?