To change into knight you need to be lvl 10 and have/get 2 eggs. Then you need to talk to the old guy who is break dancing in elim (bottom right corner on map), after you talk to him a bit you should have a quest item, then talk to the guy in front of the doors of the building right next to the break dancing old man. Congrats you are a knight xD. Alright here are a few builds for knights. If your the solo kind of person and choose 1v1 then i suggest lvl 5 bash and if you want one of the two defensive skills, as for stats just up str and agi, and maby a few in vit. If your the mobbing kind of person i suggest going for a cross skill and a defensive skill if you want. For an AOE knight go for str and agi, and some vit if you feel it neccisary. You can also mix and match skills but i sugg