Zalmarath, The Colossus

When targeting with the mouse cursor on the boss, spells (Bonestorm, Boneblast) appear in unintuitive locations and don't do any damage.

Using attack in place to attach the left arm appears to do damage, torso does not.

Life remnants will spawn at the monsters feet outside the arena.

Skeleton summons will sometimes get stuck outside the arena.

One of the animations for the attack where it holds the dagger with palm facing the monster and stabs it an angle into the ground seems to start then not play out.

Vile apparitions sometimes collide with the player and continue to move causing sliding movement that's jarring to look at.

The Vile Apparitions weird collision sliding can be used to move faster than normal while casting spells.

Occasionally the player gets 'teleported' to the bosses feet for a second or less then back up to the arena.

casting frost bomb at him from long range will most of the time get cast on some raised ground instead of where my mouse is...

the dias will 100% of the time block my frost bomb if it is between me and the boss as well as other points on the platform...

only way to guarantee landing it is to run up to him and drop it in melee range...

Controller targeting causes spells to pass through his torso as only the arms are tagetable.

Skeleton archer's poison arrow is shot off platform and deploys attarget able.

Hit boxes cause curses to miss even with his hand directly on the circle.

Cool-looking fight but there's something strange with the hitbox. I was doing the encounter with a melee character and most of my proper attacks (skills) were swinging away from the boss and not doing any damage, even when standing right next to it and mouse cursor on it or a little behind it. Had to kill it with the default attack because somehow it seemed to actually hit the boss and do damage.

I also managed to dodge roll off the platform a few times but luckily there's some kind of a fail-safe mechanism. I just teleported back to the platform and continued the fight.