Disgaea 4 A Promise Unforgotten: X-Dimension Guide Chapter 7 Pt. 2
Stage 5: The idea behind this level is to build up a tower of characters and toss them next to the Prinnies so the Bye Bye Panels will set off your character which will set off the Prinnies. I just tossed my characters and had my Kunoichi walk to the enemy.
Stage 6: Two options here, you either take a ride on the warp blocks and lob spells at the enemy or just stay in one spot and lob spells at the enemy. Considering that the Ninja are standing on Evade Blocks combined with their innate Evility, you have at most a 50% chance to hit them so this could be kinda annoying depending on your luck.
If you're wondering why I glossed over the Prinnies, it was due to me noticing that their health bars were low even though I didn't hit them. Is it supposed to be that way?
Stage 7: This is an interesting one, you need specific units to complete this map in one turn. Valvatorez is best for the green warp because his Tyrant Flughude will hit the enemy. For Yellow, anyone with a 3x3 spell will work except for Desco because you have to move Yog Soggoth to make it usable. Blue is just like Yellow but anyone with a 3x3 skill/spell can work. Last is Red, you need someone with Rune Dimension to get the last batch of enemies.
Stage 8: Just hit her.