This build is completely opinionated and will not gaurantee a win, Lycan is a hero that requires at least some team coordination. When building him, you should always take the enemy team into consideration. Do not try to rambo your way into a 1v5, you will most likely fail. If you have a Vlad's and BKB or Skull Basher, you should have no problem dueling anyone. Don't be afraid to ult your way out of danger, always take advantage of Lycan's speed.