... Though 15k bullets via a Shuriken, that would be a story to tell.
No really ... A shuriken fire rate is 700 RPM. 15K is 22 minutes non-stop on an average gold match with PUGS.
Back to the original topic after your edits:
As everybody said : me3 mp is about the journey and not just reaching the destination.
Frank_is_crank gave you two links, which you undoubtedly haven't even touched, yet, by the look of your followups. In the second link the adobe file explain on page 14. that you can reach that goal in at mininimum 958 hours if you rarely waste consumables (medi-gels, ops, cobra, ammo packs), ignore the challenges, extract everytime etc. in short- utopia play. Or u constantly leech/good friends, but extract nonetheless.
I dont know why I'm wasting time answering this - if u didn't even read the first response from the community or answered some of the first 10 member posts ... (Voice trails off in the sunset)...
If even u don't take your own posts seriously , why should we ?- So its best to treat this as troll post and simply make further jokes...
You're on PC man. Mod yourself at least 98m credits, complete the manifest and then continue to frustrate fellow players with mediocre play on plat. Get frustrated quickly and mod your own lobbies to give only urself god mode that leave other naives in awe of your "excellent" play. Come to bsn to laugh at the console race and deny modding vigourously. Discover the art of modding finesse and the Challenge of submitting to the hall of fame without others detecting it. Secretly wonder why the quality of fellow PC player is so low, and the lobbies so empty in comparison to the glorious years. Been there done that.