Mark an enemy with Assassin´s Promise, use "You Move like a Dwarf" → use "Ebon Assassin" and finally use "Finish him" and repeat the action for the next enemy. Always the same 1→2→3→4. Use the other 4 skills to kill bosses like jadoth and the fury or in case that Assassin´s Promise didn´t recharge your skills because the enemy removed his hex or you get rupted.