If you know that youre weapon is going to hit an enemy, use ice block. Becuase there's a chance that you will die before your bullet fire will hit the enemy. (Only use it when you think and know that its going to hit them)
As Pip can heal the team from afar, you should stay away from the sight of snipers and champions that can fly/float, so staying on top with the help of a good team is really useful.
Force Torvald to use his Recharge ability in order to maximize the effectiveness of your Energy Shield. Don't pull it out before he uses that ability. It will recharge his shield faster and your shield will be severely crippled.