This is what I use:
4* Demohide ( Sig 5)/ 3* Harm Accelerator(Sig 20)
4* Bonecrusher ( Sig 5)/ 2* Harm Accelerator (Sig 100)
5* G1 Bee(Unawakened) or 5* UM(Unawakened)/ 2* Nightbird's Mark( Sig 100)
I manage to win 1 out of 5-7 Raid Defences nearly always.
there are really only two or three awkward fights - Megatronus on robot resource, Scorponok on tech console, Cyclonus on EMI module (which isn't that hard but you're guaranteed to take damage)
The rest are pretty straight forward and you'll only get kills if the other player has bad luck, a weak team or screws up
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4* Demohide ( Sig 5)/ 3* Harm Accelerator(Sig 20)
4* Bonecrusher ( Sig 5)/ 2* Harm Accelerator (Sig 100)
5* G1 Bee(Unawakened) or 5* UM(Unawakened)/ 2* Nightbird's Mark( Sig 100)
I manage to win 1 out of 5-7 Raid Defences nearly always.
And Technojack while ur at it.
Technojack, HAjack, Techponok are three other surprises to punish those who didn't bring the right bot.
The rest are pretty straight forward and you'll only get kills if the other player has bad luck, a weak team or screws up