Hi all some of you might have some truble with lvling effectively so im gonna tell my way of lvling.
first note i put all my stats in ATK (the first option)
lvl 1-6 just fight whatever thats 1-2 lvls higher than you
lvl 6-11 depends if you have +4 crests and eggs a.k.a braves and miracles you can go to lvl 18 impmon and win pretty easy if you dont got equips then try and kill anything from lvl 10 to 15
lvl 11-21 here is a good time to get braves if you use renamon. if you got +4's then party against lvl 36 impmons if you dont got +4's then party against lvl 36 impmons.
at 21 you have to get braves no matter what. after you get braves go and try to kill lillymons guardromon or warumonzaemons you might have to party to 26
at 26 you can survive against the lillymon guardromon or warumonzaemons (mummymons with party) but remember cards you can train there to lvl 31 then you have to kill mummymons or megakabuterimons if you got tamer lvl 30.
at lvl 36 if you dont got tamer lvl 30 then stick to mummymons if you have tamer 30 then keep fighting megakabuterimons or cyberdramons if you got tamer lvl 40 then fight kiwimons or infermons to lvl 41 or 46
Then you got the hang of it and you wont need my help anymore.
happy lvling