Trouble clearing the way of the soul fighter part 1

[Mari4869]

I am a new player and I don't know how to find the sun beam in the given combo so that I can defeat the masked hongmoon. 

[SilverFoxR]

Sun Beam? It's probably be in your ranged stance (tab to change stances). You should also be able to check your skills with the K key.

[Handy]

I also can't find skills which they asking to do (checked all skills in "K"). What level is recommended for this soul fighter part 1?