my review so far

[Ambiorix]

the gameplay is good

the design is epic

we could increase the difficulty of the basic mobs a little (combo, ai, etc)

I am aware that the difficulty of a souls likes game increases during the game, in this sense I think that the difficulty of the demo is correctly defined.

The last boss is quite a bit challenging, but he is fine except for light effects (or animations)

There are a few too many in my opinion, some combo starts are difficult to detect, notably one of those which is launched after a teleportation.

Note for others next boss: keep it predictable (and visually watchable aka not to much of animations/light effects/particules) and it will be fine, no need to fall into a type of Radhan boss drama likes where a lot of people cried and that FromSoft team had to rework the boss 2 times.