Red Faction: Guerilla is awesome. It's a sandbox game, with multiple set missions, but the funnest thing to do is run around in trucks covered in remote charges and crashign them into high value buildings. And then detonating them, and watching the carcass of the car go shooting out through a hole in the roof. Or jumping out, tumble along in low mars gravity with ragdoll physics, and then crash it into a fortified bunker to start your base assualt. Or you can blow a wing off an EDF flyer, watch it lose control, and crash into a nearby guard tower before blowing to pieces. Or you can get into a heavy walker and throw EDF tanks into nearby buildings, and then walk through those buildings. Or you can use an arc thrower to electrocute everyone in a tank, then climb in and blow up EVERYTHING in site. So if you don't like blowing things up, then you might be able to enjoy running around with the sniper rifle and nano rifle, stealthily sneaking into a heavily defended base to blow up a key structure, or rescue hostages. And Toady himself list it as one of his favorite games. (It was somewhere on that Reddit thing)
But Armegeddon sucks. I have a few hundred hours of playtime on Guerilla (Singleplayer), and however many hours it took to beat armegeddon. They kept everything bad about the game, and took out everything good (Except blowing stuff up. But they sitll managed to ruin that somehow.)