I say chuck kreds to the dogs! They ruin some of the best games on the site! It's just a sick joke making us pay for features on free flash games. They're meant to be FREE!!!
best strategy for badge: castle stage, nightmare mode, disable demon, friendly fire and collision. Switch to rockets. blow all the first wave up exept 4 a few, block up all entrances except the bottom and fire away! Run out of rockets, switch to railgun and pick up all ammo