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.
A few notes:
1. After a few wins like this, the game will prompt a message saying that will you no longer increase you 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.
Doing all character will take about 480 wins.
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* Second Solution *
This solution is a little long but once everything is set up it's touch and go.
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;
2. A dummy account; and
3. 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, especially during times when there are fewer players, like 2am, I got as much as 10 fights in a roll.
Whenever you get a random, hopefully it will be with the dummy account.