is there a way to get to the third floor of the repconn office to the BOS guys without having to kill the robots....i have a badge so i can walk around freely after tour hours but thats it

There is a terminal on the second floor that requires 75 science to hack and allows you to print out a badge for the 3rd floor.

Short of that I suggest a pulse gun if you're energy inclined, drops robots fast.

Use a stealth boy or sneak. There is a 3rd floor badge on the third floor.