You may have already seen a couple of videos that we've published featuring Just Cause 3 - one of which gives you a sense of the game's scale, whereas the other one is just, well, a bit weird. It involves a cow and a makeshift catapult and it's probably the fairest representation of what people will actually spend their time doing in a game like this.
When you've run out of helpless animals to fling across the map, I guess you'll want to have a crack at destroying (or 'liberating' as the game describes it) the occasional military base. This process largely involves shooting things that are helpfully marked with the colour red, although experimentation is certainly encouraged. Here's Ian and myself doing just that.