HELP FROM PS4 ASIA REGION

I can't find the game on psn store asia region, to be specific in singapore psn store. 

No it's not on the Asian store unfortunately. I guess they don't think it would be popular. But the Asian store has alot of games not released in the west so guess it evens out in the end.

You can make a US or an EU store account and then get it that way, the only problem with that is you will not be able to buy ingame currency or download the free stuff. If that isnt an issue for you it would definitely be to your benifit. There are alot of tutorials on youtube or just google making a US or EU psn account. There are free games released on both markets which are not available on the other. Hope this helps you get to play DD2.