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
Cal,
the time of day does not seem to affect the timers for challenges or for timed missions.
After getting the mission or challenge and the clock starts counting down, hitting the increase or decrease ToD button only changes the exterior time, sun position, and day or night statuses.