Ok, the game is
unbeatable in DOSBox. I tried this moment on a real Windows 98 machine and it worked. There is a cinematic screen and it simply hangs on it under DOSBox. Under Windows 98 I can see it and pass it
Be warned though that Hexx needs a mouse and EMS memory support, I had to enable it it config.sys.
Phew, I'm in the 3rd dungeon right now, The Fire Tower and so far I am loving this game.