Regret has some new weapons, like the Hyper-Diamond Cannon, and the Hyper-Hawk Acid Gun with an acid mode, a Plasma mode, and a new Electricity mode. He is very intelligent and has remembered one, crucial mistake. Don't shoot yourself. One other thing is that he's friends with Easy, Normal, Hard, Harder, Insane, and others. Except for anything that's beyond the bounds of threatening like Abnormal Face. He is also very brave, dodging things at the last second without having to panic.