BBE (serenity and tower)
Horus (Avenger, blight and cosmic)
KP (greed and warlord)
Apma (forge and cosmic)

3 minutes average, 2'12" best.

Sometimes, Horus atacks last, despite be on far left position, then Set block all damage under vanish cover.

Also, sometimes Sekmeth moves last, using fury and giving the whole team an extra turn with 100% critical.

When this 2 things sucede, you will be defeated.

All talis alread there when I tried. Some adjustments on that should improve safety and/or time.