Fable II

I couldn't get this achievement by any of the above mentioned methods. I don't know if I was doing something wrong or if there was a glitch in my system, but another easy way of getting this achievement (I found out on accident when I got frustrated) is to just use your will (magic) in public when there are at least 5 people standing nearby. Of course you must have the balverine suit on when you do this.

Good luck all and hopefully you don't have the problem that I had

These are the things that worked for me (100% good and pure character):

Hobbe - use random funny expressions for a minute or so, make sure there's 5 or more people around you (go to a bard to get a lot of people around you).
Hollow Man - use the play dead expression once.
Balverine - use a magic spell

I had a bit of trouble getting the Balverine one, no matter how many times I was using scary laugh, bloodlust roar and other scary expressions, I never got the it. But when I accidentaly used a magic spell in bowerstone, I got the achievement. I guess that one is bugged or something.

My little sister has a 100% evil and corrupt character and got the Balverine and Hollow man achievements just by walking around in Bowerstone >.<

Simply take a stroll through Fairfax Gardens wearing the Balverine suit acquired during Costume Party quest.

or...

String three achievements in a row. Attract a crowd in the Town Square by wearing the Hobbe suit and making five people laugh by doing the Sock Puppet expression to get the The Ghastly Jester achievement, then swap suits to the Hollow Man and play dead for The Repugnant achievement, and finally swap to the Balverine suit and give'em a bloodlust roar for The Howler achievement.

Dressed as the Balverine as stated use the Scary Laugh expression.

**i actually jacked this expression up..
started it and clicked out of it right away and even though i failed the expression i still got the achievement for it.

dress as a balverine and just equip a weapon with the "fear itself" augment and no expression needed