Anywhere on body: 110mm rocket pods*, railcannon strike, orbital laser, orbital precision strike*, 2 x EAT, Arc Thrower (20+ to body), flamethrower, Spear, might be others

Front leg and then shoot exposed flesh: EAT, Recoilless Rifle, Railgun on Unsafe mode (4 shots),

When paused after a charge**: autocannon to backside of front leg, laser cannon to backside of front leg, impact grenade to backside of front leg, probably many others

*These stratagems seem to be sticky for some reason and I’ve had good success attaching them to the chargers as they pass or after they’ve stopped.

**Some people seem to think that this strategy takes advantage of a hitbox bug where the charger’s armor is temporarily reduced after their charge attack.