Sewers are the grindiest part, kind of stupid to have that be early in the game honestly, after that it is mostly unique encounters until the end . There is a grinding dungeon available too for people who like that sort of thing, but it's not really necessary. Think you might recognize that design philosophy from my other game.
Glad you liked the music and the presentation, mud is sort of bad but needed to stay due to being funny, you get quite a lot of abilities further on which you can switch between freely outside of combat in the menu.