That's close, but still a bit wide of the mark. I don't want to hijack the discussion, but hope it's okay to clear up a few inaccuracies...
Judaism doesn't have the same concept of "salvation" and "damnation" as Christianity or Islam. There have been various thoughts on the subject over the centuries. What it comes down to is that the fundamental Divine Spark which is part of each of us is perfect and imperishable. But it is (metaphorically) covered with dross. Each of us is entitled to a portion on the World to Come, a return to the Divine. But if one does not turn away from evil and towards good the process of returning to that state is longer and more painful.
The good or evil that we do here in the world has cosmic significance precisely because we are spiritually limited, half blind, free-willed and deal with gross matter. The Kabbalists say that the angels envy us because of our capacity to do such things, to make changes in solid dumb matter and affect ourselves and others in permanent ways. With the world in the sad state it's in the smallest reaching towards G-d can be the pivot on which great things turn.
According to the Sages and the Law Moshiach has not yet arrived. Look in Torah and Talmud for specifics. "But though he tarry I still long for his coming". It's said that in every generation there is or are souls with the potential to carry out that function. When he (or she) does people's eyes will be opened. We will all truly understand and live an accordance with the Divine Will. But it's not "salvation" in the Christian sense, and it isn't limited to Jews.
And Moshiach is not the Son of G-d. He or she will be a human being. There's no need for a human sacrifice. The divide between spirit and matter is a false one, so there's no need for a demigod to bridge the gap. The first Moshiach will struggle, suffer and ultimately fail. The second will triumph and bring about the Messianic age.
I guess a doctrine like that cuts down on the people who want to pop up and say "I'm the One!"
"Really? Let's make sure you've got that suffering and failing part taken care of."
The real difference is one of perspective. Christianity is much more focused on the next life, the World of Truth as we call it. Jews don't hold with the sharp division between spirit/heaven/good and matter/earth/bad. This is the world we are in. Living a good life in it is what's important. The next one is not where we are, so get back to work and concentrate on what you need to do in the here-and-now