Board Thread:Questions and Answers/@comment-49.205.95.236-20150225150140/@comment-27129269-20151028045305

1. Check for updates

2. Check if you're really in eclipse

3. Check if you've selected the Butcher himself and not the tournament or duel of that act.

Also keep in mind that some versions such as the one made for Windows will not allow you to collect boss weapons.

Also you'll have to beat him once, before you fight him and his five bodyguards in eclipse, in case you haven't done so already.