Every level also increases high ground damage bonus by 5%. The higher it is, the more advanced Huntsman skills you can learn. Huntsman: This is your primary skill tree ability.
Every level ups your Ranged damage by 5% and Critical Chance by 1%. As you level up, you'll unlock ability points, too, which should be divided in the following abilities. However, Pyrokinetic is a decent choice and is the default option in the game. The game's ability system is very flexible, so technically you can pick any school of ability to complement your Huntsman skills.