This guide is for those players who want to know the tactics on leveling up. Leveling isn't easy as many players know it and seeing all those high level players motivates us to only work harder.....so without further adu:

Level 1-5

Do a few quests and kill slimes and mushrooms (mostly slimes) till you reach level 5.

Level 5-10

Once you hit level 5, start participating in the King Slime Counterattack Kingdom Quest. This Kingdom Quest will level you up a few times as the experience you are rewarded is massive! Also, gather up as many quests as you can while you are at this stage and complete all of them even if they are repeatable quests.

Level 10-20

Do the same thing here....Kingdom Quests that are for your level and as many quests as you can do. Have a friend help you out or a guild member.

Level 20-30

At this stage, you ought to test your skills out in the abyss, which you can get to via the Forest Perimeter in Elderine. Kill monsters in the abyss and do quests (turn them all in at once so you get the experience boost). Do Kingdom Quests when necessary. Also, when you hit level 20 or 21, do the level change quest in which your class (cleric, fighter, mage, archer) will get upgraded to the next class stage (high cleric, clever fighter, wiz mage, hawk archer) and your stats will increase. The Tower of Iyzel Instance Dungeon is a great way to level yourself up. Talk to Ancient Templar Maria in Roumen for more details.

Level 30-40

Continue to do your quests as you reach level 30. Do the quest that the Weapon Title Merchant gives you (level 32/33) and make sure you are at 0% when you do it because this quest will boost your experience to 99%. Once you hit 99% experience, don't do any quests to get that 1% to level. Grab the quest again (it is repeatable) and complete it so that you will get the 99% experience again!

After this, start doing the Millennium Robo Kingdom Quest and do other quests. Guard Shutian will give you quests to do while you are doing the Kingdom Quest. Ask your friends and guild members to help you if you need help.

Level 40-50

As you get to level 40, start doing your repeat quests and keep on doing them over and over again (no matter how boring they are, they will level you up and you won't do them anymore). Some repeat quests include:

At 41 and 42 you have Ugly Goblins 2, which is killing goblins
At 43 you have A bet with Marty 2, which is killing Goblin Swordsmen
At 44 you have Fantastic Items, which is collecting Werebear Claws
At 44, 45, and 46, you have The Broom Stick of the Best Qualities 3, which is collecting Armpit Hair from Werebears
At 46 you have The Best Medicine for Athlete's Foot 3, which is collecting Shroom Heads from Sand Mushrooms (the monster, not the herb)
At 47 you have A Secretive Request, which is collecting Goblin Captain Helmets
At 49 You have Lips Of Mannequin, which is collecting Lips from Mini Lips

Also, go for the Honeying Kingdom Quest and do your best on it even if you don't complete it. It still gives you good experience points. Do epic and dungeon quests, the quests that involve high level monsters and more time. As you get to level 50, do the Mini Dragon Kingdom Quest. If you ever get stuck at a level, just do your repeat quest and train in the abyss.

Level 50-60

The same concept applies here. Do all your repeat quests that you get, do the Kingdom Quests, and go fight monsters in the abyss. Have your friends help you out. Doing the Kingdom Quests, going into the abyss, and doing the repeat quests will help you level up so it will be easier to do any new quests that come by because you want to be a higher level than the quest itself. Some repeatable quests include:

At 51 you have Grandma Myzen's Wrath, which is killing weakened ogres
At 52 you have A fantastic chisel, which is collecting teeth from King Colls
At 53 and 54 you have Delivery interrupter, which is killing Vampire Bats and Light Vivis
At 55 you have Prisoners' Escape 2, which is killing Prisoners.

At 56 has no repeat, but what you should do is turn in some of the quests you've managed to finish. I recommend turning in all quests in Sand Hill, and SEG. If you still don't hit 57, turn in the ones from Guard Nus, or from the Guild Manager.
At 57 you have The Master Criminal, which is killing Senior Torturers.
At 58 and 59 have no repeats, but you can still get through them. Again, for 58, turn in ALL the quests you've done so far. Pick up new ones, and do more. Turn them in constantly until you hit 59. When you hit 59, do the same: complete the remaining quests and pick up any additional ones and do those too.

Level 60-70

At this stage, your aim is to conserve your quests and do all the repeatable ones which include:

At level 62 you have Amnesia 2 from the Smith asking for first 40, then 60 King Mushroom Spores

At level 65 you have Dreadful Elf in the Forest 2 asking for 120 Greenkies and 30 Greenky Big

At level 68 you have Hair Remover calling for you to kill 70 Lizardmen and obtain 20 Muds

Quests that you should conserve are ones like Big Bright Golden Bat Tail Hair and quests that involve killing higher level monsters and in the dungeon maps.

Do quests that are grouped together in the same map and spam the Spider, KKP (King Kong Phino) and PvP Kingdom Quests to get massive amounts of experience. Also, you can try to do the Crystal Castle Instance Dungeon in Uruga to level up faster.

Level 70-80

This level range involves you spamming the King Kong Phino Kingdom Quest. There also quests that you can do including:

At level 71, you have the Crazy NavarRG 2 quest

At level 77, you have Uruga's Young Ladies Missing 2 which involves defeating 100 Black Incubus and Monster Collector 2 which involves collecting 40 Lizard Knight Claws (spam this quest a few times). You also have the Soldier of Destroy 3 quest (do this one now and the third part, then save the fourth).

At level 78 you have A Letter from Bran 1 (complete the first part and save the second part).

At level 79 you have Slay the Fire Nixes which tells you to kill 150 fire nix (pick up part 5 and keep it)

As you can see, there are a couple of quests that have parts that you are recommended to keep and do later on. You might also want to check out and spam the level 70 Trumpy Remains dungeon.

Level 80-90

This is the stage where you do all of your conserved quests. Quests at this level range include:

At level 80 you have Contacting Wing Wing to kill 200 Core Guardians

At level 81 you have I Despise Moles calling for you to kill 200 Moles

At level 85 you have the Dragon Relic quest

At level 86 you have Tree of Jewels that involves defeating 100 Jewel Trees

At level 88 you have A Tree with Holes killing 80 Red Nix in Flaming Mines

At level 84, all the quests you had saved, start doing them!

Once you hit the mid 80s, put a good license on to your weapon and try to get it enhanced to a high power level then spam kill monsters, especially Fire Nixes. Also for quests that involve killing huge groups of monsters like Jewel Trees, go for them to get good amounts of experience. If you have any repeat quests, do them.

That's it for the leveling guide. If you have any tips for the new level cap (level 89-105), please submit them to the Fiesta forum.