I couldn't believe it when Clark didn't back away from Corben and his kryptonite, and just use his heat vision on him. The guy is made of metal! It would've been so easy to fight him, and Clark wouldn't even have had to reveal his identity.
Also: when Clark activated the EMP and Corben was deactivated, Clark should've super sped Lois away immediately... instead he just hung out and mooned over Lois. He used to become a BDA around Lana... I would be sad if this because one of Lois' superpowers too.
I wouldn't be holding Clark to a higher standard of combat, but he's been undergoing training at the Fortress! Basic tactics are incredibly important. If your enemy has only short range weapons, then you stay out of range and use your long range weapons (heat vision and super breath). Sigh.