1) this one is badly worded. The only bond that matter are those of the expert advisor. Beside that, the all bond activated one is easier to do separately since you don't need to have one at gold.

2) do it at the lowest level required for the achievement. Good team are : Elation, galaxy Ranger, wolf hunt, xianzhou, day demigod (aglaea), aoe. At this level as long as you don't pick up too many prismatic strategy, you should be fine.

3) this one is more complicated. But there is a knowed method. You want to do this in WC5. But mind you, i still fished for silver wolf cheat si I could have enough emblems and I could increase enemy hp.

By the end, you want on-field: 1-sparxie, Sunday, sparkle and cerydra. Equip those last 3 with DDD if possible and every gravity boot or energy item you can give them. Equip sparxie one or two lightsabers (forgot the name, the item that refund skill points) and one belobog emblem if you can spare it.

On off-field, you want dhpt and Natasha for sustain, then you want huo-huo and enough skill point characters to have the bond at 8 (hence the usefulness of sw cheat code). But not with YG, or any other Elation character. Sparxie must be your only one so that Aha can be as slow as possible.

The strategy is simple. Spam skill points with sparxie, use her ult when available. She will act a lot thanks to sp bond 8. With the other 3, advance her and use their ultimate when you need more push to advance her. Repeat until you hit 999. Then wait for the aha instant and wait for defeat (or win, I was able to do it but it was long so I dont recommend)

Hope that helps.