It should be possible yes, but also don't expect any miracles. The main thing is to just log in each day and claim the daily credits. Every 7 days you will receive a common pack. If you open that, you will get at least 1 share in one of the games which will start counting in the 'diamond hands' achievement. I think after 30 days you get 1000 credits extra, and after 90 days 10000 credits which you can buy a lot more packs with. Most shared likely won't pay much but if you are a bit lucky and get one of the good games you'll start getting WINR dropped into your account.

I do kind of suspect that in time they will adjust the amount of credits you get from certain achievements as it's feels like way too much. When it comes down to the gambling on the site, the house in the end always wins so you need to get lucky there to actually come out on top. I avoid gambling myself even though at times I have a little bit of fun with it.

Enjoy & Good Luck!