I personally find the flamethrower enemy a little overpowered. He can throw flames without stop and my alien creature continues to take damage even after the flamethrower is dead. I've tried dozens of times, but failed to get through the room on the first level with two flamethrowers (and a turret and several other enemies later on the path). Any suggestion? BTW, there's a bug that the creature may sometimes be stuck in the checkpoint after respawn....