Use the following trick to get five free Reactors. Play as Anders. Build a Reactor and fill your base with Supply Pads. Upgrade the Supply Pads and get 2,600 supplies. Recycle three Heavy Supply Pads and begin to build three Reactors. Immediately Cryo Bomb your base. When your Reactor level in the top right corner reaches "4", stop the construction of the three Reactors and recycle them. Your money will be refunded, but you will have your Reactor level and four Reactors.