I've come up with a new solution to the ranked achievements and am including it along with the older one I had, although I should warn everyone
to use the new solution at your own risk. I should note that I've checked with the admins as to the regularity of the method (
Solution Parameters).
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* First Solution *
Very simple:
1. Start a ranked match while connected to the wi-fi, using the character you want the achievement for;
2. After the match starts, simply connect the ethernet cable at the back of your console (just to be sure keep pressing buttons on your controller while doing this);
3. The game will freeze for a few seconds and is tricked into thinking your opponent has disconnected, you both get a win, simple as that;
4. Disconnect the Cable and repeat for the next win;
5. To use this method for the "natural born" achievement, at beggining of the month choose to reset your rank to requalify, win all 10 qualification matches to instantly go to Gold, from there keep playing and try to win as many matches legit as you can, since your rank will no longer increase due to "disconnection wins" BUT if you're losing just get a win by connecting the ethernet cable so that your rank doesnt drop, you will get to killer eventually.
A few notes:
1. After a few wins like this, the game will prompt a message saying that will no longer increase your rank due to "disconnection wins";
2. This doesn't affect the achievements, as the wins still count towards them;
3. I've never had any problems while doing this, since both players are credited a win, so there's no fault to the other player;
4. I always tried to actually win the match legit before connecting the cable;
5. prepare to receive a lot of messages from people calling you a quitter;
6. Yes, this is cheating when it comes to leaderboards, but as long you’re doing this just to unlock achievements and not to claim you’re the best KI player around, I see no harm.
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* Second Solution *
First of all you will need the following:
1. PC with windows 10 that can run KI at least in the lower settings;
2. KI downloaded and installed on your PC;
3. A dummy account; and
4. Not exactly necessary but 2 controllers would help.
Ok, first log in ONLY your dummy account on your xbox one (it will have gold privileges because of the main account).
Log in with your main account on your PC.
Start KI on the console and on the PC.
Go to ranked matches and start searching with the dummy account and after 5 seconds with the main account (don't ask me why, but this seems to make a difference).
Using this method I was getting matched up with myself most of the time, specially during times when there are fewer players, like 2am, I got as much as 10 figths in a roll.
Whenever you get a random, hopefully it will be with the dummy account.
This method also can be used to boost yourlself to Killer, but it will take a very long time, specially if you keep getting randoms and losing, I'm almost at Gold already.
The trick is the promotion fight, you can only get matched up with players from the same level or above, so that means you'll have to rank up your dummy account, which will take much more time. But if you would boost this with someone else that would have to happen anyway.I'm still experimenting with this method, and I think it can be improved, so if you have any suggestions just say so in the comment section.