Hunters are NOT High-risk. Golden Gun is ranged and a nearly guaranteed 3 to 4 kills every time. Blade Dancers are somewhat high risk, but have a massive defense increase, and can roam with their super. Titan's with FIst of Havoc have to place themselves in the middle of enemy fire, and often end up with only 1-2 kills. Shoulder Charge doesn't have a recharge time because it involves a lot more risk. You have to be sprinting for a full 5 seconds for it to come up. You have to keep sprinting in to enemy fire to get it off. You can be one-hit killed by Fusions and Shotguns while you're sprinting at them - you can also be sniped.