Thanks for plaing and providing the detailed feedback.
If you like story heavy games you should check out chapter 2. Yeah meant to describe the attacking before entering the level but was limited on time. Regarding fighting the knights two pieces of advice:
1. Use time slow it makes it much easier.
2. They attack quickly but have a longer recovery so get them to swing first, back up then step in and attack, on easy you can land two hits before they hit you.
Regarding fireballs use time slow again, as mentioned in other replies I will retweek the obstacles to make it easier.
Again thanks for playing really appreciate the feedback.