Vantaggi
Havok is a good place to get a broad exposure to the AAA video game industry since Havok is used by so many top video game studios. As part of the developer support team and/or the development team, you get a chance to work with the smartest engineers in the industry (both in and outside of Havok). The San Francisco office is one of many offices in Havok, so it's small, but as a result, you get to know everyone in the office which creates a family-like atmosphere. Also, since Havok doesn't actually make video games, they don't have the same crunch hours as actual video game studios, so the work/life balance is much better.
Svantaggi
Lots of turnover. Not that because Havok is a bad place to work at, but unless you move to Dublin, Ireland, your career trajectory is limited. And since it's in the San Francisco Bay Area, lots of people move on to other tech or game companies in the area just because there are so many tech jobs here.