I made videos of my battles with all (in vanilla Sacred 2) the mini-bosses. At the end, there is also a zip file of images for all of these bosses (pictures, stats, locations)
(I have re-uploaded the 800x600 videos that I made back in '08 of all of these mini-bosses. Enjoy!) - I was able to re-encode 8 of the 13 with the best quality I could (based on the original Fraps settings I had back then.). Spoiler Warning: I should mention that at the end of each video it shows the stats of the mini-boss as well as the map of where the mini-boss is located. (except no map for The White Griffon. I decided to do this after I fought him). So if you don't want to see those, just stop the video right after I kill him. Banshee: https://youtu.be/aT0PB5c5z_k
Bloodclaw: https://youtu.be/mPbivoJz7Ds
Deloriel The Depraved: https://youtu.be/tibGavF-K6U
Forest Guardian: https://youtu.be/zLKE2MJkKgk
Gambling Den Owner: https://youtu.be/Tm43mSl8Cw4
Harpy Queen: https://youtu.be/m9CBPK1P0s8
Holos: https://youtu.be/rjtldDMTRHM
Kobold Chieftain: https://youtu.be/QZl1uTf63VU
Lord Of Searing Flames: https://youtu.be/MHKwfM2pCAE
Raging Boar: https://youtu.be/JdrmivSs9JM
Sinister Prince: https://youtu.be/655iZtCBXT4 Thranak: https://youtu.be/TjTLL8EDFAE
The White Griffon: https://youtu.be/NOdwhJg1kzM
~DarkWolfNine
EDIT: Those that are looking for these guys, you can find most of them on the French map, or I've also included a map location for each in this ZIP. (There are also other pics in there, like the Stats for the slain mini-boss, etc. If you're bored. ) S2_Mini-bosses_Pics.zip (approx 12 MB)