Heya Piter. Good to see you're playing VC again. Come have a chat if ever you feel like it.
AW events were nerfed by Mynet months ago. Most likely because they weren't making enough $$$. For several months we had nothing but the promise of AW Renewal which as you can see is pretty unexciting except maybe for new players. Ranking is no more, EH is just for farming medals, playing for overkill gone.
It's all alternating timed events, Tower and DRV now.
With DRV extreme, you need combination of
* GLR same element light multi hitter or aoe/turn skip
* team unleashers (preferably two)
* buffer
* turn skip
At least one awoken burst skill each team, two is preferable. An aoe skill on same element GLR takes out all as well.
For Ultimate you really need GLR and XLR cards, including a multi hitter as main AW has seriously big HP. Again, same element attacker. You can use off element support but when you don't proc, you die.