As a rule of thumb always spend your first 4 level points to get level 5 damage on ur bizon or Baha it gives u additional 20damage.... follow the weapons and level points exactly and u will breeze through the game easily... If u have mag+ go baha if not go bizon
I have the train pack from the daily missions so i get 3 more points but just take away the 3 points from the attack and u will get 15 hp/16attack... with 1 mag u can bring down the final boss summons in 2secs flat.... This works for hard mode as well but u do need to juke a bit more.... take note boss fights are completely up to how you want to fight it... generally i go in close for maximum damage....