I missed Raiden 70% of the time or so. I didn't break the cursed shields curse. I didn't get Illumina or Snow Muffler. Missed a few other items. Didn't improve character stats. When I did improve them I didn't put speed past 40 and put MagPwr too high.

Didn't use EXP egg to level up.

It got easy yet it took a long time to optimize. But now I'm into creating my own stories.