I don't know if there's a method specific to this game, but in general you might try winebottler (similar to WINE for linux) which attempts to allow you to run windows programs on a Mac. I would note that WINE is a bit glitchy at the best of times (though I expect winebottler to be better; bearing in mind funger is a tad unstable itself), and probably won't play nice with DRM. Also the website has not been updated in four years; you may still need some technical prowess to get it to even work. It's a shame that there isn't any good solution to your problem as an OS is such a fundamental thing, but good luck! You might also try wineskin to do the same thing if winebottler doesn't work, but I don't have experience with either.