Soldat is a Worms style multiplayer action game. It is like a 2D version of games like Counterstrike and Unreal Tournament. In single player it is pretty good, but the real fun is in multiplayer. The graphics are OK. It looks pretty good, but it's in 2D and is not very advanced. It is a popular game, so finding servers to play on should not be a problem.
Overally, the game is great, I guess, the only bad thing about this game would be the grahics. But that doesn't really matter that much, when the game is so great!