CellFactor: Psychokinetic Wars

The final reward is unlocked at 600,000 points.
Refer to my "Marathon" guide for ways to gain points fast on your way to one million points.
Solution for Marathon In CellFactor: Psychokinetic Wars

WARNING - WILL TAKE UP TO 1 HOUR TO COMPLETE.
Step 1. Complete all the single player challenges.
Step 2. Go to customize and select Guardian then rewards and choose Speed Inc. for REWARD 2.
Step 3. Go to multiplayer then player match then host private match and choose Training Room as the map and Capture the flag as the game type and choose time limit = 60 score limit = 0 then start the game.
Step 4. Now you need to use the LB button and run back and forth between the flags till you hit 600,000 points.

To get this achivement you need to get 600,000 points a fast way to do this is setup a public match on xbox live make it a private CTF game score limmit to 60 and time 60 play the match on tranning ground and start, now the game will tell you that it's waiting on other players to join just wait a little bit the match will start even though it's just you. Score the flag 59 times for one team ( do this team first)the score the flag 60 times repeat this process untill you unlock Achivement.