How to obtain B gun's dry Achievement/Trophy | BF2042

I made a custom portal experience to obtain the else unobtainable achievement. CODE: aanu1a Due to the weakness of boris turret it's impossiple to obtain in multiplayer or versus normal co-up Incase code no longer works you can make your own experience, i used following settings Map: orbital 15 friendly AI 49 enemy AI Beginner PVE AI Buff your own health and damage. (HS DAMGE 10.0!) To speed it up give enemy ai 200 health.