This might the best compromise between fidelity to the boardgame and making and enjoyable strategy game. The multiplayer might be "dead" for some, but there is quite a lot of single player content, and playing against AI has its challenges.
If you enjoy turn and grid based strategy, and love the Warhammer 40K universe, this game is for you!

For people who miss the L4D feeling and love the Warhammer 40K universe...
Currently the game has four classes, but with the amount of select-able talents, you get plenty of play style variety, and there is a fifth class on way (payable DLC though).
Overall good map and enemy designs (sound and aesthetics wise).
My only gripe currently is that there are some optimisation issues (nothing game breaking though).

A bit short, but overall a good experience!

One of the best games of the last ten years, especially if you play with friends!