Is it possible to get 280 Chaos Coins without buying any with RP? or am I forced to buy with RP?

you can every day for the next 2 weeks well get new daily missions valued at 10 rp a piece. So basically everyone without the pass will get you the border.

Ahh alright! Thanks for help :)

What is at 280?

I only got 2 missions today and 20 tokens out of it. How are you guys getting more than that?

The event ends in 14 days. 20 tokens over 14 days =280...so do them every day and you'll just barely make it

Definitely, this event is lasting at least a month, and you get at least 30 coins a day (excluding today because the first mission wasn't really one) if you do all 3 missions. Some will probably even give more than 10 coins.