Original Thief game, final boss "fight"
The most common strategy by players, is to simply toss down some moss arrows on the ritual circle, so the Trickster doesn't notice you are stealing the ritual item.
I however, decided to go cat burglar style, and went around to this one rocky protrusion to the side of the ritual, in the shadows. I climbed on top of it, and realized that the rope arrows would stick in the roof. So, I shot a few rope arrows, heading towards the ritual center, then made like Pitfall, and jumped from rope to rope, until I was hanging over the ritual center. I slid down the rope (in my head I was hanging on by my feet), and snatched the item.
For some reason, I couldn't jump back the way I came, maybe it was just bad aiming or what, but I kept falling and getting spotted, so I just hung there instead. This turned out to be even more amusing, because the final bit is the Trickster looking up at the ceiling, while standing in the center and yelling "I've been betrayed!!" before he dies. Since I was hanging there, it felt like a classic movie climax, where the villain looks over, sees the sneaky hero waving at him with the MacGuffin, and then dying. So I, again, imagined my guy was hanging there, ritual item in hand, and flipping off the Trickster as he looked up and saw him there, realizing he'd been tricked.
It was a most enjoyable moment for me.