Thief Skills by Level
----------------------------
  1 backstab               
  1 peek                   
  2 steal                  
  3 hide                   
  4 climb                  
  5 sneak                  
  6 search                 
  8 pick lock              
  9 glance                 
 10 throw                  
 11 tail                   
 12 slip                   
 13 dodge                  
 20 poisonblade            
 23 fortune                
 25 double backstab        
 30 shadowwalk             
 36 triple backstab        
 37 mindsight              
 40 fate                   
 41 evade blow             
 41 vanish                (Rogue) 
 42 backstab quickness    (Vigilante) 
 42 backstab speed        (Assassin) 
 42 disguise              (Rogue) 
 42 penetrate disguise    (Vigilante) 
 42 poisonblade bonus     (Assassin) 
 42 sense traps            
 43 assassinate           (Assassin) 
 43 quad backstab         (Vigilante) 
 43 backstab mastery      (Assassin) 
 43 poison resistance     (Assassin) 
 43 wound                 (Rogue)