SMITE

As Amaterasu you need to hit three enemies with the final strike. When you use her ultimate Amaterasu leaps into the air and strikes down with her blade and then has a very very short pause before the next strike. And that repeats into the final strike.

So strike, pause, strike, pause, strike.

Her ultimate has a coned shape hit radius, So you do need to be close to a group of enemies when attempting this. Arena gametype would be the best option and is how I got it in a single game.

The final strike of her ultimate stuns enemies, so you'll know if you get it if you see 3 stunned enemies, the medal, and then the achievement. If you see any less than 3, it's a no go.

This would be best gone for if you are playing with friends. You could essentially have a friend trap gods with Odin, or try to time a pull with either Ares or Xing Tian.

I also suggest using the blink relic to jump in and then use Amaterasu's dash if needed. Then try for the ultimate.

Good luck. Feel free to send me any questions.

In order to get this award/achievement you need to hit at least 3 enemy gods with the last strike of your ultimate ability. Once activated she will strike 3 times you can miss the first 2 but on the 3rd one you need to strike at least 3 enemies. Lookout for team fights perhaps sneak behind them, if you are struggling you can always make a gaming session.