Can it be killed with the sword or just using pits?
I was thinking just pits, but perhaps a sword could do the job as long as it strikes in the direction opposite where it's looking.
The entire room has to be built around their movement, so you can't really have any other sort of puzzle with a juggenaut in the room.
bull. if you want something that doesn't involve him, all you have to do is create a space for your other puzzles that are outside the juggy's view.
perhaps the problem is i didn't explain the movement pattern i hd in mind clearly enough...
1: it is exactly like a eye at first, except that it can see through walls
2: when activated, it charges directly towards the player's location moving only in a stright line, stopping only when it hits something it can't go through, or a pit. it does -not- track player movement after being activated.
3: if it stops after moving the first time, it then begins circling in a clockwise motion, looking to reaquire a target. if it does, repeat step 2.
I personally don't think there's any need for it.
so, puzzle ideas from this?
get it into the pit without accidentaly destroying the walls hodling back a crapload of goblins. time it's movement to kill multiple serpents with one charge before falling off the pit that surrounds most of the room. use it to get rid of trapdoors that would leave the player stranded if he tried to do so. a remake of 'frogger'. negotiate through a flat plain that essentially becomes a maze as dodging one activates the next, and so on.
that's just off the top of my head.