Cheeseoman | Assault on Ghirlandaio in 1 Turn (Valkyria Chronicles) @cheeseoman | Uploaded November 2022 | Updated October 2024, 7 hours ago.
I beat Assault on Ghirlandaio in one turn. I learned the strategy from this video on Nicovideo:

nicovideo.jp/watch/sm7763547

The strategy is pretty easy. The positioning and aiming don't seem precise at all; I got everything on my first try. While working on this, I discovered a cool out-of-bounds glitch:

youtube.com/watch?v=un9Aua3LBig