Not bad
Not the best Bioshock content out there. The game is really about its story and atmosphere after all. While Clash is interesting as a concept, it doesn't really suit Infinite. It's fun for a few times, but nothing you'll keep playing over and over. After finishing the campaign you'll likely have had enough of the combat, though given Infinites gameplay that largely forces you to focus on either guns or plasmids, but not both, Clash could offer a quicker way to tryout things you didn't in the campaign.
Note: Bioshock Inifinite is no longer compatible with Catalina, so keep an eye out for that.