Hey gremlin, I feel your pain. There were a number of xbox exclusive JRPG games back in the early 360 days for which I was chomping at the bit. I gave into the evil empire though and ended up getting hooked on Halo as well, which was really bad, because they released that remastered Halo xbox-one package and yea, I upgraded. I know, I'm hopeless.
Good news for you though is that Rise of the Tomb raider was a "timed" exclusive release. So the PC versions should be coming out in early 2016. Since they had it planned, it may be a full release rather than a port, which is usually better for the PC game play mechanics.
Terri, I've only played a couple of the earlier Tomb Raiders. Honestly, it did take me some time to get used to it, but I had fun in the process.