Tucker's Kobolds tricks (often)= DM Fiat.
"I can't believe your 10th level characters got whooped by a couple of simple 1 hit point kobolds.....who set 5 traps that were really hard to detect and did 5-50 damage each! 2 Kobolds huh? Beaten by 2 kobolds. Suckers!"
DM beats players, go figure.