Whatever you are any class in Knight online, you want to upgrade your character as quickly as possible. So you should learn some leveling guides.
I collect this Knight noah online Warrior Leveling Guide and post it here. If you are a Warrior, you should learn it:
Level 1-50
This is easy, its not a problem to do this. You can solo in moradon and get to 20 in no time. Then you can do spoilers or lycans till 30 or 35. Next you can move on DK's and get into partys there. I wouldnt suggest soloing, its much faster if your in a party. I got from like lvl 30-50 in 2 days forming partys on DK's. You can also start doing deruvishes when your 40+. Theres always partys doing them so wait till 1 invites you. At 40+ cardinals in cz are hell of exp if you have a clan. Blood seekers and beasts in ardream are great also You wont have any problems getting to 50. I myself can get to 50 in 3-4 days. 2 days if on a new server with a good clan.
Level 50-60
This is a more time consuming part. You can continue doing deruvishes untill 55. Then your ready to move unto trolls and apos. Note that apos and trolls are better in cz then in emc/luferson. Altho they have more ac and hp, they give more exp and you wont get KSed. Raids are rare on older servers so dont worry about that. thats pretty much it for getting no 60. Just keep exping on those and youll be 60 in no time.
Level 60-70
3 man apos partys are great for getting to 70 fast. Same goes for brahmans. You should pick one of those 2 and stick with it till you hit 70. Its just a matter of time... Its very time consuming so thats what youll need. Paramuns are by far the best constant exp you can get altho youll have a bit harder time getting into them then at 70+.
Level 70-80
Well i know most ppl dont plan on doing this but just so you know... Many ppl will tell you to do doom soldiers, CW's, falcons, troll shamans, TC's, TB's, etc. Thats all just a waste of time. Considering your party is 70+ the best you can do is apos of flames/cold, Eidolons and Dark Knight noah .
