Shitfaced in Sholoss
Den (Releases Stingers) x1
There's a big spike in the game's difficulty here. Lots of tough enemies, and you still only control one army. You may want to do some leveling up to make the battle easier. To raise experience and gold, just leave the battle in the middle of it. You can leave either by using a Book of Strim or by placing your Hero on top of a town, then ending the turn. Don't hesitate to retreat if you're feeling overwhelmed.
The first thing you should do (and get into a habit of this) is unarm the monster den. To unarm a den, move one of your characters right next to it, then a new command, "unarm", will appear. Select this to make the den stop producing monsters. Of course, this is easier said than done. While you're doing this, the first group of monsters will be attacking you. Wipe them out, and don't hesitate to heal any of your characters whose HP fall into the single digits. Isaac is extremely valuable for taking out the Germanii.
After the first group of enemies is defeated, hold your ground. The third group should be advancing toward you, and if you start moving, you'll have to fight them at the same time as the second group. Wait for the third group to make it to you, then take them out. The Shmealth will probably sit back and hit you with Burnas twice. There's not much you can do about this. The good news is that it only has enough MP to cast it twice. The Escargat is simply tough as nails. Take out its comrades and surround it and it'll go down eventually.
Make your way toward the next group of enemies. A few Stingers from the other Dens have probably materialized by now, but they should be easily defeated by now. The only thing you need to worry about with this group is the Smealth. Burnas can help take it down quicker, but you might want to conserve your MP. Now advance to the final group.
Be aware that when you reach the forest just north of the final group, the Smealths will probably attack the closest character with Burnas. So make sure that whoever approaches first has plenty of HP, or they WILL be killed. The Escargak is blocking the bridge and won't move, so just don't move next to him and he won't hurt you. So, stay back and take care of the Smealths and any Germanii that approach you, then work on the Escargat. Since you don't want to go next to him, just put a Fighter with a Spear two spaces from it, and an archer behind him, and pick away at its HP until it dies. Then, you should just be left with Sekol. One hit should do him in. After taking him down, you'll be forced to forgive him. Unlike Suikoden, you can't choose to lop off his head, unfortunately. But the good news is that after he dies, the battle will be over!