>>938992792
The bosses are okay. In my opinion the final boss is the most fun. If you ever intend to finish it, turn the difficulty up to max and shoot for the final boss. I am on perpetual cope that there is no easy way to rechallenge the final boss.
I do hope at some point they actually flesh out the dungeon delving and combat a bit more, it does get super samey and the relics added pretty much nothing to the game. I almost never touch them.