One tough Cookie just not a cookie its a challenge

C&C: Kane's Challenge for the 360; an exclusive mode for the 360 version to give the users a chance at their own challenge to either aid Kane and represent his dominating faction or to go against his team and taste his wrath accordingly but of course not just him, GDI forces and NOD and Scrin are all involved the question is which do you choose?

--- I chose Nod at the very start of Kane's Challenge and it was very tough so i decided to use the new faction "SCRIN" alien forces from another world to take a chance and as we know if you go against Kane he taunts you as you go and since Campaign is NOD only Kane's Challenge seems logical for "another faction". Anyways I chose Scrin.......

----- Now as it stands i am at "The Reaping" which is REAPER 17 (Sub Faction) of SCRIN, and their not no easy task, and yes i am stuck. Fortunately up till a certain level the AI is easy or medium or understandable... as you gain a level it gets harder and yes i can see that-- so now I am officially stuck On that level and I would welcome any help as any takers can offer, please help seriously of course i have struggled before and managed to rise up and win on the 'buzzer beater' (basketball analogy). Which can seem to occur.

--- if you are known of these factions you know SCRIN forces and subs have "RIFT generator" which can pull your base in and tear it up, and its nasty.. so any help is needed please, need a strategy to win this battle