Welp, I hecked up. I was trying to open my 3DS (original, not XL) so I could replace the busted shoulder buttons. I stripped three of the screws (top leftmost, top 2nd to left, top rightmost) by using too large a screwdriver. I've tried using the new screwdriver set I bought that managed to remove the other screws just fine; no dice. I tried using a flathead driver of about the same size; no luck there either. I even tried putting super glue on the end of the screwdriver, holding it in place for about a minute, then trying to turn the screw; didn't work. I have no access to power tools, can't afford to buy any, and don't know anyone who owns any. Is there any hope or am I just completely boned?