That Time I Got Reincarnated as a Slime Manga, Vol. 18

This volume is pretty awesome. The fights are all becoming super-powered. While it's great to see Rimuru flexing his skills in the latter chapters (but it was never really difficult for him - even if it's Milim), it's even better to see how some of his subordinates have grown in strength, like Benimaru's one-hit on a previous foe (granted, it was a weaker version). The anime definitely took the fights in a much different direction - they prolonged some of the fights, which had the effect of making the enemy seem stronger than the impression you'd get from the manga. Like Yamza was pretty pathetic (yes Alvis, I agree with your comment). The oddest fight was Phobio and Geld, where in the anime, they actually made them outright lose pretty badly; here, it just seemed like they were a bit hard-pressed. Shuna's fight, like Benimaru's scene, was really epic. And then there's Diablo...