LogFAQs > #909325572

Tried out the fast level up method and yep that works fine. It involves using Haulellujah pep power (Hero/Jade/Erik) to get increased exp/gold from your current battle, then accelerating everyone and defending until you get Hero, Jade and Sylvando pepped up again to use Electro Light which has a chance of replacing all enemies in battle with metal slimes relative to your level. It'll work better the higher level you are because you'll eventually get vicious metal king slimes around when you get to level 80 which are worth a boatload of exp (plus even more when you pair it with the pep ability that boosts EXP)

Then when it comes to killing the slimes you want Erik (whom you accelerated earlier) to have his Critical Claim ability for a guaranteed critical hit. I was able to have him attack twice in a row with this to take take out 2 of the 3 slimes right away, then I was able to finish off the 3rd with Jade's Lightning Thrust ability.

This has ENDGAME PART 2 SPOILERS in it so watch at your own risk, but I ended up getting 1 Metal King Slime and 2 Vicious Liquid Metal Slimes and killed them all for 246,246 EXP which was enough to level up my guys twice, but I've seen it go over 900K if you're lucky enough to get 3 vicious metal king slimes (which you wouldn't get until you're 80+ anyway.)

https://www.youtube.com/watch?v=uMfL5iDlC1c" data-time="

This will come in handy for the post-game when I need to quickly max everyone out to 99 for trophy purposes