The most epic was when I got to the Final Chapter of Fire Emblem 7. I felt confident that my team would be indestructible.

Unfortunately for my predictions, the level proved harder than I thought. After failing countless times (due to poor luck), I decided to change around my team a bit. The team I eventually won with was comprised of Eliwood, Nils, Lyndis, Hector, Athos, Raven, Harken, Fiora, Jaffar, Pent, Wil, and Bartre. I failed three times before actually succeeding in killing Nergal.

Attempt 1:

I had killed off all of the morphs, and Nergal was revealed. I felt that nobody could stop me now, when a Druid berserked Jaffar. Jaffar then proceeded to kill Pent in one hit. At that point, I felt an urge to hurl my DS out the window.

Attempt 2:

All the doors had opened, and only Kenneth, Ursula, Jerme, and the Reed brothers were left. I sent Fiora down to kill Ursula with Rex Hasta, thinking that she'd be able to take her out in one strike. Unfortunately, Ursula scored a critical hit with Excalibur, killing Fiora in a single strike. I then proceeded to hurl my DS at my bed and not play for a few hours.

Attempt 3:

Again, nobody was left except for the Reed brothers and Kenneth, who I always take out last. I sent Hector to take out Lloyd with a Swordslayer. Unfortunately, Lloyd attacked twice, and the second strike was a critical, which killed Hector, which resulted in a game over.

Attempt 4:

With a bit of luck, I was able to remember to bring a Restore staff, but I didn't need it for the first half. Using my usual strategy, I took out Uhai and his Snipers with the help of Bartre, Harken, Raven, Athos, and Wil. Moving on, Kenneth appeared, but I ignored him. Sending Harken to take out Brendan, I weakened Brendan with Bolting from Athos, and Harken, all though taking heavy damage from Basilikos, managed to finish Brendan, and not die. After that, Darin appeared. I weakened him with Athos' Bolting, using it up. After that, Hector with Armads finished him. Then, Ursula and Jerme came. Using Fiora, I finished Ursula. Then, I sent Harken and Raven, who were able to take out Jerme with ease. Then came the two hardest people, Linus and Lloyd. Retreating for a couple of turns, I got them where I wanted them. First, I had Wil weaken Lloyd with a Silver Bow. Then, Athos came and finished him off with Forblaze. Nils played for Athos, giving him another turn. Then, Athos got a critical hit, killing Linus in a single spell. I then used Forblaze, and again killed Kenneth in one hit with Forblaze. I then had Athos finish off the remaining mages with Luce, and had my remaining forces take care of the three Generals from the South. Finally, only Nergal was left. I sent Athos with Aureola to take care of him. With the power of Aureola, and a bit of luck dodging Ereshkigal, Athos was able to take down the dark druid. The next half was much simpler, and with Armads and Aureola, despite Athos getting killed by the dragon due to an oversight on my part, the dragon was killed, and the game was won. Not that Athos dying mattered, as (SPOILER)he dies anyway even if he's alive after the fight.