Originally Posted by Shinobi273
Can you explain performance bar? I play offline so that is probably something I need to be online for. Are those online store weapons or do you unlock those in SP? Is there an online store?
When you're looking in the store you will see certain weapons that have a performance bar where it would normally say "Junk" or "Repaired." It will say "Performance" and then have a little bar. It doesn't matter if the bar is empty or half full to get the achievement. If it is empty, when you purchase the part a screen will pop up and you will be able to choose if you want it to fire faster, have more ammo, etc. If it is partially full, the choice is already made and you just have to equip the part and use it until the bar fills up (happens automatically).