Crypt of the necrodancer is a good roguelike for this, there is meta-progression if you play the game floor by floor but if you go into the all zones mode everything is unlocked by default. It is possible to defeat every enemy hitless, but you’ll need to learn the pattern of movements to do so by yourself.
To be clear, that’s Cataclysm:Dark Days Ahead or CDDA. It’s quite removed from the original cataclysm by whalesdev, and is more focused on strict realism. There is also Cataclysm Bright Nights which is closer to the arcadey feel of the original. Both are great and are open source.
Crypt of the necrodancer is a good roguelike for this, there is meta-progression if you play the game floor by floor but if you go into the all zones mode everything is unlocked by default. It is possible to defeat every enemy hitless, but you’ll need to learn the pattern of movements to do so by yourself.