To sort the mega xp I found out if you do a mission and get tons of xp don't use it, save and exit the game and then use it when you start again and it will use normally and you can upgrade loadsMay i request a trainer update for the latest build?
The bugged options:
-Mega XP gives me a huge number, but it resets to 0 right after i upgrade something.
-Fast Kill stops working around 30/40sec after activation.
Everything else is peachy.