I have played through several scenarios as part of a group and the overload rolls us every time. Either we run out of time or just get crushed. It seems like we cannot regain enough gems and the overlord gets a ton back. Either 5 or 7 per scenario. Also, with the way the armor works most of the heroes except Conan cannot damage most monsters. They usually survive unless a hero rolls 2+ successes on dice and the overlord can easily block that by rolling just 1 or 2 dice. If people burn a lot of dice, they cannot effectively block and run out of gems too quickly. What are we doing wrong?