You can use CoSMOS 4 byte exact value to scan for kills etc. For example I wasn't able to cut 30 zombies in half no matter how hard i tried (tried like 15 times) so I scanned for 1 kill 2 kill 3 kill etc until there were 4 values left, changed them to 29 and then on the next kill the challenge completed. Figure since there isn't a freeze trainer option on the trainer this might help other people sharing that same difficulty
I am curious what happens if you use the time of day options
best,
Cal
No challenges you get by free running or by doing the weapon missions. It gives you bonus EXP to your movement or to your fighting skills.
and $$$
like : psycho missions