if u wana get rpg credits allot go ct the more kills the more rpg credits u will get and i would upgrade long jump to about 5 for now then upgrade gravity about 6 and upgrade vampire the rest that should be good then just keep trying to get credits and upgrade them thats how i did it and i am level 900 in 10 days :) works for me u should try it thats my way of doing it
Nice guide Nate,but honestly I would suggest playing Terrorist for a bit and try to get LR and win a few LRs to level up a bit first to get your stats up before you try going against them rebellious Terrorists :P