Edit: fixed the math, should be right now. So I'm sure there's some of you out there who were thinking to yourself. "God getting to rank 25 sucks dong. How long is this gonna take?!" (Answer at the bottom) Well, let me help you out there About 2500 rep to rank up a level. 25 levels to level up. Total amount of rep required: 62500 (Using the strange coin-heavy synth strategy with xur) Divide that by 25 (amount of rep from a heavy synth) You get 2500 Meaning you need a total of 2500 heavy ammo synths from xur. Divide 2500 by 3 (number of heavy synths you get per strange coin) You get 834. [b][u]GRAND TOTAL[/u][/b] So to sum up you need 834 strange coins. To get that exotic mark quest. Buy heavy ammo synths from xur. Turn those into your faction rep. And you should be rank 25 within the Friday or Saturday. Edit: I know there are a bunch of passive forces that contribute to faction rep (bounties, patrol missions, faction packages, etc) so you might not need the whole set of 834 strange coins Edit: I might do the math later for leveling up using only Variks, eris, and the gunsmith. Why? Because I'm bored to the extent where I think math is fun. For the gunsmith [spoiler]Gunsmith sells synths for 950. with the cap of 25000 glimmer you can buy a total of 26 synths. 1synth = 25 rep 26*25=650 rep Need a total of 62500 rep 62500/650= 96 (rounded down) Meaning you need to spend the glimmer cap a total of 96 times. 25000*96=2400000 glimmer required to get to rank 25 using only the gunsmith[/spoiler] For the gunsmith, with weapon parts (I'm actually not too sure on this one.I think it's right but I might messed something up.) [spoiler]250 glimmer for 5 weapon parts. need 25 parts to donate. 250*5=1250 glimmer 25 parts = 50 rep. total of 62500 needed 62500/50=1250 meaning 1250 part donations needed. 1250*25=31250 total of 31250 weapon parts needed 31250/5=6250 meaning you have to make 6250 purchases of weapon parts to get to rank 25.[/spoiler] For Eris Morn [spoiler]5 black wax idols for a synth max cap of 200 for the wax, meaning a total of 40 synths per stack of wax. 1 synth=25 rep 25*40=1000 rep total of 62500 rep need for rank 25 62500/1000=63 (rounded up) meaning you need 63 stacks of wax 200*63=12600 Total of 12600 black wax Idols needed to reach rank 25 using only Eris.[/spoiler] For raids and motes [spoiler]For my sake we're going to use an average of about 17 materials per run. SO....2 raids (VoG and CE) 17 materials per run. (normal then hard on VoG and CE) 17*4=68 Total of about 68 materials. go to the speak and covert the ascendant/radiant energy into shards, then turn those shards into motes. 2 shards needed to get 1 mote. 5 Motes = 100 Rep total of 62500 rep needed. 62500/100=626 (rounded up) better know a stitch. ☜(ﾟヮﾟ☜) Anyway......626*5=3130 (626 is the number of donations you have to make and there's 5 motes per transaction.) That means you need 3130 motes of light to reach rank 25 using only raids and motes. AND I can tell you how much you need to do that. if say you get about 17 materials per run per raid. you get a total of about 68 per week, 2 per mote so split that in half. total of 34 motes per week. 34*100=3400 meaning 3400 rep per week 62550/3400=19 (rounded up) so about 19 weeks. BUT, the numbers may vary (scrapping gear, RNG, chests that you choose to get) so I say it could vary from 17-20 weeks and you'll be rank 25 using only old raids and motes. (BTW you also get 5 or so motes from leveling up the light bar and doing bounties so it could even be 10 or less weeks)[/spoiler] For motes in general [spoiler]Total of 62500 rep needed 5 motes = 100 rep 62500/100= 625 625 donations 625*5= 3125 total of 3125 motes needed to reach rank 25[/spoiler] Patrol bounties (bet you'll never see this idea anywhere) [spoiler] Total of 62500 rep needed 22 rep from kill/collect bounties 27 VIP/scout/recon bounties We'll start with the kill/collect 62500/22=2841 (rounded up) total of 2841 kill/collect bounties Now for the VIP/scout/recon 62500/27= 2315 (rounded up) total of 2315 VIP/scout/recon bounties. saddle up you squad and spend a day on patrol. Read some grimoire while you're at it.[/spoiler] Cheers :D