Halo Spartan Assault is the other one I remember that is BC. Titanfall BC would probably be the most impressive thing they could pull off considering how much trickery it does with the 360 hardware.
Oh yeah! I had totally forgotten about Spartan Assault, I must have thought it was a beefed up remaster or something.
Titanfall and Rise are both stunning on 360. Not to take away from how good Rise looks on XB1 (Titanfall, not so much) but it's actually hard to believe what a good job they did to make it not only content complete, but also as close a port between gens as I've ever seen. And after 10 years of 360 they made magic come out of that little fire hazard.
I even ended up playing it after being spoiled with it on XB1. I just had to rent it and give it a spin on my miraculously still functioning 2007 era Falcon 360. Surrounded my self with so many fans it felt like I was playing in the middle of a tornado. Even after having completed the game and not having played my 360 with any regularity since I got my Bone at launch I still kept having to stop and marvel at how they even managed to pull off the little details like spiders and scorpions. The kind of cool environmental stuff that always gets left on the cutting room floor because their can't make it work, or they just don't really care about a last gen game that no matter how much work they put in will go largely unnoticed. Kudos to the guys at Nixxes who seem to be one of the few 3rd party developers who can get the kind of results that almost only ever come from in house studios with tons more support and pressure to make their box come out ahead.
Seeing how close they managed to get with elderly hardware almost makes me a little sad that we are going to see the blurring of generations of consoles from now on. Stuff like Rise, RE4, Doom 3, and God of War 2 only get to be such incredible feats thanks to a constant need to extract more and more out of something and drawing from a deep understanding of how to make something that looks like it's running on a totally different platform when compared to even midcycle stuff.