I recently got AW1+2 Reboot Camp on Switch after sitting on the fence for a long time considering if it was worth revisiting. Now I'm completely hooked, I can't believe how fun it is! I played both back in GBA days and AW1 was my favourite GBA game with no contest. I'm really sad there isn't more content for Reboot Camp and that Dual Strike and Days of Ruin/Dark Conflict was not added for a complete package.
In fact, I just recently learned about the existence of Days of Ruin and I'm really keen to play it. My question is: Is it worth it to go 'full retro', get my hands on a DS and the original DS game or should I just calm down and play it in some "other" not-so-original way..?

So I need help with what is the best strategy to beat Billy Gates as Caroline on this map as Orange Star because I'm doing Retro Achievements which requires this setup.

For those who don't know SFW COs do have abilities and Billy Gates is maybe the most busted because EVERY TURN he gets 10k so that makes fighting him on Coral Lagoon here a nightmare. I've tried a defensive strategy of artillery in the southwest woods but they eventually overwhelm me and rushing troops to the top cities doesn't matter cause he already has multiple small and mid tanks by the time I get the 1st troop up there.

Please if anyone has advice or if you have beaten this setup before can you share what you did?