"I think when we looked at closely [at the system] a lot of the frustration was our lack of communication on how to really use it within the game", global brand manager Mark Madsen told Digital Spy.
"I don't think it was really integrated at every step along the way. We've re-examined it, and we're going to make it clearer on how to utilise it, and make it more of an integral part of the game."
Madsen continued: "I think we're going to balance it better this time around. You're always going to have to ration your bullets, but if you remember in Metro 2033, there was the dual bullet system, there were regular grade bullets that didn't inflict a lot of damage and military-grade bullets which inflicted a lot of damage.
"But at the same time, [that] was your currency. So you were left with the decision, 'Do I shoot this guy with these high-powered bullets, or do I save them to help me purchase something that's going to help me out later on down the road?' You're faced with [a] unique decision every step along the way."
It was added that a survival element will be "ever present" through multiple systems and not just rationed bullets.
"You're going to get your ammo off of the bodies, and you're always going to be wondering, 'Where's my next batch of bullets? Do I have enough air? Do I need to change out my filter? I have too many cracks in my visor, so I'm vulnerable to the next attack'," Madsen explained.
"'If I get hit again, I'm toast if I don't get a new gas mask, which is highly unlikely in the next 30 seconds or so'. So there's always that underlying tension."