Skills are now hugely more useful and potent, this is balanced with other weaknesses. Defensive Ability now makes use of Dex and Int in various degrees. Offensive Ability now makes use of Dex, Int, AND Str in various degrees. Compared to default Titan Quest, XP gained from monsters weaker than you is lower, while tougher monsters give MORE XP.
Rewrote or edited most of the in-game formulas, here’s some: 3x monsters, 1x bosses that are tougher than before. 100+ heavily modified or slightly modified items and sets to fit the new Paths. Build on two Path’s similar strengths, or use one Path’s strength to make up for a weakness. Each Path has fundamental strengths and weaknesses. Build-creation is tremendously more complex. Gameplay is designed with skillful play and thoughtful build creation in mind. New Path Selection screen as seen above. 24 complex skills per Path makes 216 brand new skills (not including all of the hidden/linked skills and pet skills). 9 entirely new “masteries” called Paths.