Shouldn't this be an achievement, just like the others? I did this in a game yesterday, but did not get an achievement. Is there a way to get this as an achievement? What do you guys think?

you can unlock a new set of achievements in that category by achieving the 3 v 4 achievement.

you mean taking a 4 with a 3

yes

Is that possible??

something tells me that Mr. Gentleman is joking

yeah, it's not even possible to make 3v4 work

I looked on analyze attack in 75% luck...
So apparently you can take a 4v4, 5v5, 6v6, and even a 7v7 (>1%) but you cannot get and 8v8 or higher.

you can :)

NinjaNic, you CAN get a 8v8 or any NvN with 100% luck. It is just that the odds of doing so are so incredibly low that they round down to zero. Such victories are mathematically possible but effectively impossible.

As to the OP, if a 4v4 merits an award then when do we stop? 5v5? 7v7? 10v10? Why reward people for bad strategy and ridiculous luck?

If you really want to get the achievement and are willing to lose for it...
And I only checked in 75% luck, not 100. That's crazy, getting a 10 with 10!

On any luck of 67% or higher XvX is always possible.

100,000 v 100,000 would be so fun to do in a game

Want to see how long it takes to get it?

Dual map with bonuses at 100,000 and a army cap of 1 times your income.

Although I guess you're end up only attacking with 99,999 armies, I guess set the order to cyclic on truel and have the third territory a wasteland where someone can keep throwing an army at first turn.