Does anyone remember that "One day only" credit exploit where you went into the firefight lobby and got all but 2 kills then left? Well I have perfected said technique into a much faster way to get credits. I've been using this for 3 days straight, hitting max credit limit every time.

Well, it pains me to say it but I have perfected this method and I am going to release the information to everyone.

Every single day, there are challenges for the Campaign.

There are some challenges easier than others. Such as the ones that say get 250 kills in any game mode. Easy. Or the ones that require the 10 kills with a jetpack on Exodus. Hard.

You have to do the same thing for the most part, but in campaign there is a different technique to it.
NOTE: You must have the OLD model of Xbox or have the new one with an ethernet cable. Because you must unplug your internet and the new xbox has a built in wireless.
Here is the Tutorial;

1. Check daily challenges.
2. Find a good one, an example, Get 250 kills in any game mode.
3. Go into campaign on Oni Swordbase (best for normal campaign kills like in the example challenge)
4. Now, do the Oni sword base exploit, you know. the one with the target locater. (better in normal since your not doing the actuall exploit)
Mini-Tut for Oni exploit

A. Start Oni swordbase on Heroic or normal with your selected skulls on
B. Go right up the stairs and kill the elite or run past him and down the stairs
C. Hug the wall and get to the room with the locater
D. Go in and get the target locater, then quickly run back against the wall and get a checkpoint.
E. Use the target locater to get Killionares.

5. Okay, now use the Oni exploit to get the majority of your campaign kills.
(for the example challenge of 250, get about 225 or 230)
6. Then you just have to use your weapon to kill grunts slowly.
(grunts are easier for initial kills)
WARNING! Dont rush! Watch how many kills you have! don't use grenades!
7. once you hit 248 kills.
(248 just to be safe, but for pros like me get 249)
8. Now QUICKLY PAUSE the game and select save and quit.
9. Now, you should only need 1 or two more kills to go.
10. Go back into the mission on whatever difficulty is required (For example challenge use Normal)
11. Kill one or two of what your supposed to kill
(Example challenge is anything but grunts are fastest)
12. Now, unplug your ethernet cord or wireless adapter.
13. Wait for your internet to disconnect.
14. Plug your internet back in and connect to Xbox live.
15. Kill 1 or 2 more of what you are supposed to kill.
16. Repeat steps 11-16!

This is much easier than the old one where you had to go in firefight matchmaking and leave the game afterwards because now you dont have to leave the game.
The example challenge is 2,500 credits.

From repeating steps 11-16 it takes around 30 seconds.

So by simple logic, 2,500 credits every 30 seconds.

This also means that you can get;

5,000 credits a minute
15,000 credits every 3 minutes
25,000 credits every 5 minutes
50,000 credits every 10 minutes

Doesn't logic rule?

See. You cheated, exploited and did math all at once ! Math is awesome!

Also, I am NOT taking credit for discovering this exploit 3 days ago, and I was pretty sure I was the first to find this. But I guess not according to the replies.

I do NOT take credit for the ONI swordbase exploit I wrote the mini-tut for.

I do NOT take credit for the original exploit that I perfected, (Firefight version) I do not know who first came up with it but if anyone is willing to tell me I will give credit to them.

Have fun cheatin guys! messege me if you need help.
I hope to find more of these exploits too.

Have fun guys! 8)