Not bad for what it brought to the table
As far as Isekais go as a overly used genre this wasn't bad to watch, ofcourse it has the main concepts of being isekai'd into another world with game mechanics built in and the development of added people that get added to the group essentially making it a bit of a harem (excluding the knight, dog and the slime) it does make for a decent watch as the action is decent, the character backgrounds aren't half assed and pretty much the MC has to work a bit to become powerful which doesn't take too long because of the amount of episodes given with the pacing.
The things that didn't make this good are probably how morally upright the MC is so he ends up being like a generic person apart from the battle junkie attitude he has which does make it more interesting but still doesn't outweigh the boringness of being an upstanding citizen like person which is just occasionally annoying and just disinteresting at this point, although I understand it's pretty much the default Japanese personality.
Other things I liked was the soundtrack used which wasn't half bad and kind of enjoyed from time to time.
So if you're thinking about watching this do keep in mind this anime is more classed like the mid season fodder and isn't meant to be taken in the light as if it is a mainstream anime title so you should have no big expectations other than a show to watch that's not bad if you have some time to kill on your hands.