Quoting numerarius5988am,
Bad Idea: laser guns with a power output of less than .5 Watt.
Good Idea: electrolasers with the ability to alter the electrical signal frequency from anywhere between 50 Hertz (lethal) to 10,000 Hertz (nonlethal, stungun).
Bad Idea: electrolasers. Since when do we need lasers with "stun" settings. I'd be constantly setting mine to "deep fry" or the equivalent.
Good Idea: Charging an enemy who is better than you in every physical way and has better gear, while you are armed with the weaponized equivalent of a flashlight, the body armor equivalent of a T-shirt, and a bayonet (the equivalent part is as pertains to enemy weapons tech).
Balls of steel right there, I tell ya whut.