RUSH rewards are gifted to users who have connected certain game accounts to the Player Rush site. These rewards are given for a few different actions those players perform in those games.
To gain RUSH rewards by playing DOTA2 you must first set your stats to PUBLIC in the Game Settings of DOTA2. To see how to do that and connect your Steam account to Player Rush please check out our Connect DOTA2 to Player Rush article.
Once you have connected your account you can visit your Player Rush DOTA2 Dashboard.
There you will see your stats and rewards for DOTA2, as well as the Player Rush DOTA2 Leaderboard. Player Rush members gain RUSH rewards for killing opponents inside of DOTA2 and performing assists. The amounts vary, but gain RUSH Rewards for every kill and assist you make playing DOTA2.