This deck is so consistent not only against Kaiba but also against other LDs and SDs as well. Remember that you are looking for victory only, not for high assessment!
There is one tip to complete this. Everytime you think you will lose the duel, just close the apps and reopen back. Then, quit the current duel and it that duel will not be count
True, the key is lost but at least your state is not. For example, if you already win 2 and need 1 more to make it consecutive, doing that will make your 2 win stay. For me it is better than you lost the duel, spend more keys and back to square one.
Aha OK I got it. You mean that the keys will be lost, but the number of consecutive duels will remain the same after quitting the game. I wish I knew this before since I spent about more than 300 white keys to complete this mission, lol!
For this mission, my suggestion is use 1700++ attack monster and insert attack boost card such as rising energy, reinforcement, spear shield, riryoku. Dont forget riryoku field to counter econ