Hardest orbs to get?

I don't know, perhaps that thing with the cows in Zephyr. Or maybe the ice hockey one in Collossus. There were quite a few hard ones.

I think every orb is so easy to get. even without codes.

I would say the hardest orbs to get are the speedways ones. Man them speedways are hard but luckily I beat them! In like 2 hours

You shouldnt post in dead forums, like this one it had a few months dead, for me the hardest is the one in Skelos Badlands, the Dinosaur killiing 2 (not real name but true objetive)

Lol, I remember that distinctly.
Traable with the traaly eh?
I had a lot of trouble finding some. The one behind the waterfall in Winter Tundra rings a bell.

i found the one in idol springs, were you save the hula girl hard. also the one were you have to feed the idol mouth was annoying.
pearl harbours one was annoying like you said.
"trouble with the trulley eh?" we pulled the volume plug out lol.
easiest is probably were you shoot the tiny lizards in glimmer.
hockey i found quite easy, and the one with the ice wizards were you have to find and take the snow leapord was just pointless.
but the overall hardest was the 2nd dinosaur i agree...

I've changed my mind, the Metro Speedway one is super-easy for me now (the only speedway orb I have trouble with is the first one)!
Anyway, the two hardest for me now are the second Skelos Badlands dino killer orb and the Agent Zero orb on the level with magicians.