In X1 I did a lot of killing. By and large, killing was the end goal. Got a Terror site? Kill everything. Splashed a UFO? Kill everything. Base is under attack? Kill everything. Will it be the same in X2, or will killing be more the means to an end, rather than the end in itself? Will there be objectives? (Such as take and hold, steal/raid, destroy X, rescue Y etc.). Will killing be sometimes more selective or under certain constraints? (Assassinate X, Kill Y in Z time limit, Kill X until Z time limit has passed, etc.).