If you're having trouble getting the hard badge, I tried a new loadout and it worked out pretty well: 3x movement speed, 3x reload speed, 1x vision radius, 1x health, 1x regeneration, 1x protection, 3x damage, 3x fire rate, 1x ammo capacity, 1x projectiles, 1x penetration, 1x knockback. If your regeneration/protection is reset, it's worth stalling for the meters to fill up if you're going for the hard badge.