Just beat the 4 Orc Prides without problems, got into the slime tunnels and suddenly this guy: Ianoni the Crusher
Pretty tough, but I manage to wear him down with my bombs, teleporting away when it gets too dangerous. But then he suddenly teleports me into the fearscape....

Is there any way to prevent the teleport from happening? Any stat that makes it less likely or something like that? Teleport immunity maybe?
If not I'll try to beat him from as far away as possible, throwing a bomb and then running away until the bomb is ready again.