After you`ve done everything in Broken Valley, you need to head to Maxos temple, after some events there you can go to Orobas Fjords. Maxos Temple fills up the level gap. However, it is possible to kill the goblins and imps, it maybe just a bit more difficult depending on the build you have chosen for your character.
As for the bunny, pity i didn`t meet him. Next time i play D2 ED, i`ll make sure to kill every bunny and chicken.
