Review Detail of Misty_Gin in I Was Reincarnated as a Polyglot in Another World!

Here i go for review.As long as I can read it's good enough for me.About the story, it's more like video game than novel because he feels like doing quest rather than showing his life and almost no interaction except the bare minimum.The plot is too smooth like when he need to infiltrate he conveniently get invisible spell, when he can't breach fortress there's people that help even thought they are not even close except the sword master, almost no guard around important people that become his target, never find a problem on the road, and many more.Need more detail in world building, fighting, item(I nearly though "morning star" is really morning star and not a sword, it's like naming a sword as "spear").You need to make character more realistic, MC is a PhD but he easily get manipulated without questioning anything, spineless top people with no authoritative presence.It's the most obvious for me.