Eternal Winter

Eternal Winter is the third map of the second episode, Enter Flonne, in Disgaea: Hour of Darkness.

Story
Flonne comments on the persistence of Laharl and Etna, and tries to put a sleep spell on them. Etna tries to fast a Fire spell on Etna, and Flonne uses a reflect spell, which causes the fire to hit Laharl.

Strategy
There are two 1x3 rows of Zombies, how convenient. Sword users almost assuredly have Blade Rush by now, and spellcasters probably have a 1x3 pattern too.

The Winged have a pretty impressive aggro range, and their Hell Pepper (speaking of 'convenient 1x3s') does pretty hefty damage if the characters aren't over-leveled. Remember that ganging up on enemies is good; one dead enemy always beats several half-dead-but-still-alive ones. Healers shouldn't get too far forward; they probably don't have Espoir yet, so their heals will be very needed.