The first boss, the armored slime now has a defeat animation, you can view this animation by pressing the button you assigned for your down while standing on the boss after defeating it
sadly, the dev still hasn't fixed the issue where all assigned keybind reset to the default setting after viewing an animation (this also applies for the boss defeat animation)
aaaaand there is also the final boss, which you can access next to the giant crystal, sadly, if you have a full save which has progressed to the hell level, you won't be able to return, so I suggest making a new save.
other than that, idk if there's anything else
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