SMITE

As Ishtar, stun 3 enemy gods in one cast of Blades of Retribution

This will need a little more luck.
Blades of Retribution is Ishtar’s ultimate ability. When used, she fires a set of five blades forwards in a cone. This first use will damage and cripple an enemy.
When you use the ability again, the swords will return to you, doing a second load of damage and crippling again.

If you hit the same god with the initial throw and the return, you’ll stun that god.
For this achievement, you have to hit 3 gods at once with both the initial use then the return use in order to stun them.

Once again, Arena is king here, as enemy gods will bunch up, making this a lot easier. You can use a regular Hunter build, although for the sake of ease you can add some cool-down reduction in order to use your ultimate more often.
You can also try pairing this with other gods that group up enemies, like Ares, Cerberus, Da Ji or even Atlas.