Cheating isn't good anyway, but you don't get blocked or donnot get achievements.
But in Boss-Fights, like Alduin or etc. you cannot use the console to cheat them down with "kill", you have to kill him like the game wants it...
But like I said: Cheating is not good!!!
With cheating you do not fell the whole game, you may find it boring and stop playing it.
DONNOT START CHEATING!!!