Hello, sorry if this is something oft repeated. I'm just curious if I need to be doing something differently. 
  
So I have a lvl 7 Rogue whose skill level in stealth is at 9. Which seems like it should be adequately high enough to be able to sneak up and backstab enemies. I haven't been able to figure out why I can sometimes sneak up on enemies and sometimes I can't. 
  
Are some area's beyond my level or is everything scaled? Enemies have a perception skill and some enemies are just unsneak-up-behindable? My stealth level isn't that great? 
  
I am currently in an area where I haven't been able to sneak up on any enemies. I've killed 20 or so enemies and they haven't been to difficult to defeat but it is disappointing as a rogue to not be able to sneak up on enemies. 
  
I feel like a unicorn without a horn...so I suppose I feel like a horse, born to unicorn parents. 
  
I am perfectly willing to concede that I don't know how to play this game. 
  
However, I am still having plenty of fun.