Yes, Oppo A5s does have the virtual gyroscope sensor.
No. Oppo A5s does not have fast charging support.
No. Oppo A5s is not a water-resistant mobile phone.
Yes, Oppo A5s does have the support for the face unlock. Besides, it also has a fingerprint sensor.
No. Oppo A5s does have the fingerprint scanner but it is not the in-display fingerprint scanner. It is placed on the back side of the mobile.