IM Wang(CAN) Rd7 WYCC 2012

Here is the Rd7 game that Richard Wang played.

Richard Wang

Photo FB Team Canada At WYCC 2012

Paravyan,David (2285) - Wang,Richard (2356)
Caro-Kann 4.Nd2 [B12]
WYCC U14 Maribor (7.3), 14.11.2012
The game was very sharp with mutual attacks. White had the initial attack momentum but then the game swung over to black's favor. Unfortunately black did not captialize and white's attack trimphed in the end.
How should black play in this very complicated position?

Black to Play