I propose to remove the current boost system. Instead, add the ability for Limus to apply a boost. Add the ability to feed Limus to improve these buffs. So that the player can pump up all the power-ups but activate only one during the passage. For example, make the buffs complex. If the player relies on runic attacks then the buff will be concentrated on this. If the player has chosen the role of a tank, then the buff should include survivability and everything connected with it. Accordingly, the strength of the buff will depend on how much he fed the limus. Also, activating the power-up requires feeding the Limus when the player enters the room. This will make the passage of the dungeon smoother, with a deeper immersion in the process without constantly opening the power-up window and will allow you to balance the last boss so that players do not complain about his amount of health, since the problem is not in his health but in the imbalance of the power-up system itself. I also suggest using the current boost system in another dungeon. For example, add a dungeon the same as in the add-on of the same name in the game Grimm Dawn, in such a dungeon the current system will work perfectly. And if co-op is added, it will be very cool to create a mess with your friends in such a dungeon, holding back waves of monsters and, in between them, open the power-up window and make a choice of what you need. Let’s like who is waiting for Fangs of Asterkarn! :))) 
https://www.youtube.com/watch?v=qqx219mTDPs&t=196s
Devs said the crucible, in this area at least, is supposed to be roguelike, so its kind of like Hades i think, i didnt played that though, never liked roguelikes myself. Arent those buffs a part of this type of game?
Oh and they have plans for the other statues to be other things, like boss rush or even what you are asking for, waves of enemies to defend, there are a lot of statues there.
The point of the post was not to suggest removing elements
bagel, but change it. This system can be implemented in different ways. By choosing cards, for example, like this now, or by using totems, etc. I also meant that at the moment it is unbalanced. Some levels are completed in a matter of seconds, and the knight can be killed with fists without weapons. Because of this, I don’t feel like this dungeon poses any challenge. Regarding the fact that the other statues will be different, this is good, since this dungeon, I think they ruined it a little.