On each map you have to defend specific buildings and their is plenty of information available to help you do that. At the beginning of each game you can see all of the waves for a map and you have to ration out your money so you may have enough traps for each set of threats. Each wave can have different enemies coming from different directions and each group of enemies can be attacking different buildings. There are traps you can set up to instantly kill small enemies like wolves, but anything as strong as a werewolf is going to take a lot more and there are many different ways you can tackle each situation. There are fire walls you can use, wolf traps, hanging nets, spiritual totems, bait, bonfires, towers, ballistas and more. You also have tow characters to choose from and each of them can be leveled up with various skills that look to be similar to an RPG skill system. The game is definitely a bit rough and they originally had a release date of Summer 2012, which obviously isn't accurate at this point, but it does look like it could be a lot of fun and be different than everything else. Check out their newest gameplay video, with commentary from one of the developers from Artifice Studios, and get a good look at Sang-Froid.
Main Website: http://www.sangfroidgame.com/