Brief discussion of the 2018 tactical game Into the Breach, then the bulk of Chapter 4--Limberry Castle and sealing Elmdor's gear, the brothers reunite at Igros Castle, and everyone proceeds towards a showdown at Mullonde. The Calculator, Samurai, and Ninja jobs, the pacing and encounter design of chapter 4 as a whole, some of the game's more obscure ways of obtaining items.