I really hate it when sniper games have you kill dogs. That's been done several times already and it always feels cruel to shoot them.
The game is fine, but not the most original. On improvement on the first installment. 3/5
A secret: In the asteroid sections, blowing up the largest asteroids may reveal jewels. If you collect 15 of those, you can use them to bring one of the brothers back to life right before the final boss. This only works if you have only one brother alive before the final boss.