I’ve been giving OE a shot in Adventure lately and holy moly it is incredible how effective he is. A concoction potion into trollhammer is a guaranteed kill on any boss. His survivability is insane with THP on stagger and a shield. His bombs can get rid of any horde quickly and easily. The chaingun just removes any special you point it at.
The skill floor is high and if you aren’t covered by your team you can get interrupted, but if you are covered you do everything. By Sigmar this character is powerful and fun.