*This can only be obtained with an AI VERSION OF RAIDEN
In order to obtain this achievement you must first make an Ai loadout for Raiden, (which can be found under your 4 playable loadouts) then load up any multiverse and press
on Raiden and scroll over to your Ai loadout you have just created, from there simply let your Ai play for you, When it wins the first round raiden will taunt, if he doesn't summon a little version of himself (A.k.a kid thunder) simply press start and Restart the match, repeat until he dose.
Let it be known this is all luck base however it isn't super hard to get just keep doing what i mentioned above and you should get it in less then ten tries, for those who get it in fewer attempts, Great! let us know how many attempts it took you. For those who aren't so lucky, and happen to take longer, feel free to also let us know in the comments to give people a ball park estimate of what to expect.
For me, Kid Thunder appeared on my 7th attempt.
As for what/who Kid Thunder is for those who care it was a special Friendship finishing move Raiden could summon in MK2.
Anyways hope this helps and please lets us know how you did in the comment or if this guide was helpful thks