Sir (3 letter words every 3 seconds)
Lord (4 letter words every 2 seconds)
Guard (5 letter words every 1 second)
Knight (6 letter words every 0.5 second)
Paladin (7 letter words every 0.35 second)
Myrmidon (8 letter words every 0.25 second)
Gladiator (9 letter words every 0.20 second)
Invincible (10 letter words every 0.15 second)
New Difficulty Titles!
Source: Steam Community (opens in a new tab)