Well, the light forces were in perfect positon to be ambushed, but this tactic wouldn't work
- even with auto challenge enabled, you need to be in close range to challenge
- due to the lag (I had one frame per second) it was very hard to target anything
- after the challenge has been accepted, the target's inferface targeted back the wanabe sniper
- when wounded, the victim healed with potions.
It's understandable to have multiple fights in the same time, because a battle is supposed to be somewhat chaotic. Also, I noticed a lot of tourists in our position when we were waiting (people who didn't know about the event and come to see what's happen), I suppose some of them were unexpectingly challenged. Now I think we should have used them as hostages

but, well, I would not have been realistic either so see ennemies stuck by Laanx trying to challenge the hostages.
Monk, you can imagine a lot of thing about the potions, even create a religion about them. It's worth the while. The potions instant fix what others spend so many effort to break. You're near to death? The potions heals you in the instant. Yours legs are broken? The potions sticks your bones together in less than one second. You're losing all your blood? The potions gather it from the floor and fill your body with.
Potions exists certainly in other domains, imagine for example a potion to clean up a room or to fix a broken vase in a snap. Why not? Living beeing are supposed to be more complex than a piece of pottery and if we are more easy to fix than to break, it's necessarily the same for everything else.