ToME: the Tales of Maj'Eyal

In the third level of Reknor, I got ported to another realm by an elite/unique mob, beat I used shadow tunnel to get my minions into the realm with me, beat the mob, got ported back (and got an achievement for surviving).

I then saw a copy of myself (which I linked in chat to get the achievement). However when I ran into myself, the game screen started flashing and was unresponsive. Had to ctrl alt del out