When I play a game like DoS or DoS:EE, I generally obsess over completing every quest. I didn't hire any companions, used Wolfgruff and Baerdotr, so I didn't complete Madora or Jahan's quests, but I did reach lvl 22 before the last battle and was almost lvl 23 which is mathematically the highest level. I seriously doubt I will go back and play any more of DoS 1, but I definitely got my monies worth... ~180h for my one play through. Honestly its more like 160h because I spent about 20 hours fiddling with the steam controller mappings to get them just right before I realized that if you set it to gamepad mode the game has built-in support... lol.