On day 1, opened a dungeon with a Lava Golem and Oil Elemental, and retrieved a Cloak for Sandro.
On day 2, attacked the Teleportation Hub, took a couple of Skeleton Warriors for Sandro. Gunar attacked back and placed a Chain.
On day 3, ran along the road to take the Companion with the Lava Golem. There was a decent amount of gold at the gold mine, around 10k. The situation was good.
On day 4, leveled up Sandro to Expert Sorcerer (50 skeletons).
The opponent probably attacked the Companion's path and received damage from the Magic spell:smile04:. They surrendered.