war for cybertron ds help please?

Anyone have a walkthrough or tip guide recommendation to help with the autobot and decepticon war for cybertron ds cartridges? I have 100%ed the ps3 for wfc and foc but find ds wfc very challenging. Havent found an online guide but i may have missed it. Stuck on rescue zeta prime stage. It's like old school nintendo when you ran across those "impossible" games. Still a fun tf game for ds though!
Thanks.
