A few things I found out about a couple bosses from the SA dungeon. Slasher and the Stygian Dragon both have that "freezing" ability which is GREATLY reduced by a high Magic Resist skill. To the point where it may not even stop you. This alone helps you from getting killed. Slasher casts a LOT of curse spells. This goes hand in hand with the above mentioned Magic Resist skill. I was on an archer without MR and he was constantly overweight. I finally switched over and found Slasher a lot more tolerable. The Stygian Dragon doesn't seem too hard... It only took 3 of us a matter of a minute or so to show red on his bar. The layout seems to really lend itself to an archer. I believe a few archers running the loop could easily dispose of this dragon. I may be wrong but with the damage 3 mages could do before we all started dying tells me archery is the way to go. I don't think it matters WHERE you kill slasher. The center seems easier because of the fact that you can run around and easily maintain him. I don't do more or less damage in there. He isn't any weaker... he just dies easier because you can move around or away from him easier. Slasher is a Demon. With an old double slayer bow that I used to use against the DF I was easily doing 50 damage to him per shot... sometimes more... The problem with this is that it causes him to target you more often. Be careful with it.