Take on two new game modes that turn the RESOGUN you know completely on its head. Protector Mode Use new power-ups like Super Overdrive, Super Boost and Human Teleporter to save humans and build up cities. Once a city is completed, it'll give you power-ups, deploy turret defences and flip the level. Make sure to defend the newly built strongholds from the city destroyer mini-boss and last as long as you can.