When Ferme drove his knee into Almus' gut, my first thought: "You should've stabbed him with the spear." If he had the time to close in, he could've gotten 2 shots to Almus' left side. Sure, they would've been shrugged off because "Isekai" but it would have built up the tension.
That line about Kendo's footwork made no sense other than to prop Japan. I also do not recall any mention of Almus practicing Kendo in his former life.