TheHunter: Call of the Wild - Weapon Pack 1 Review (Dr. Just Some Homeless Guy)
The .22 rifle and the crossbow are essential weapons. It's really too bad you can't "earn" them any other way in the game besides buying this DLC, because they are extremely useful and fun. The .22 is the best weapon for small game and birds, and with newer DLC reserves like Revontuli Coast (which has a lot of birds) it's one that I use almost constantly. The crossbow, vice versa, is one of the best and most interesting weapons for big game (though you can use it for smaller game too). I honestly prefer it over rifles for taking down prey like moose, bison, etc.
The Houyi bow? More of a gimmick weapon, but it can be fun to master. It is, however, inferior to the Alexander Bow introduced into the game by later DLCs. Its main advantage is that it's light and compact, but don't expect much accuracy out of it.
So... recommended, though preferably on sale. These weapons should've been in the default game to begin with.