You can find your own Heatmap statistics at Bungie.net. By visiting your Career Stats page, you’ll see a new tab labeled Heatmaps. Once you click that, you’ll be able to click each of Halo 3’s maps on the left side and see all manner of statistics, what weapons you’ve killed (and where you’ve used them) with on a given map, where you’ve died to a certain weapon on a given map all via sortable dropdown menus. These heatmaps, however, aren’t a collection of your lifetime statistics.