Hi
here is the problem. What if a GM allowed the player to make a high (rank six) level character for the game with everything he wants withouth GM looking at the sheet?
Due to a contract I did something like this (im still learning the mechanics but wh40k and rpg genre is my bread and butter) and after few sessions I realized that my player brings with him power armor pretorian dudes with custom made no-friendly fire bolters, sevitors with assault cannons and all knowing(i hope not) deus ex machina wise man from dark heresy books. As for the other players , one is a total nooby and he has a premade Navigator based on his own concept and the third a newcomer who is a human calculator/mid-max/powergamer that started to make very advanced builds after 3 days of holding the book.
We play a custom "Into the Maw" adventure as I test how far me and the players can go with the mindrape and horror of WH40k world. With every game I feel more and more ashamed with the nearly suicidle battles(as I percieve them) that the Explorers seem to win with minimum damage(I also had some isues with the RT demo and its infamous boss battle). Once they fooled me while training with the space battle system and took for themselves a 2nd ship with a powerful assault force. Durring the last gme I went totally nuts and put 72 primitive orks , a 16m acid spiting troll like creature againts 8 pretorian dudes, 2 servitors and 2 explorers in a mass combat scenario. I smiled at how the players were frightened while they did the math. It didn't took much time to change my grin into OMG shape when I heard of 4 dead pretorians and a total massacre of the orks. I fear of the futere and the shadow of this third very keen on rules and builds player. My worries reach even so far that Im considering leaving the game as I fail to deliver a proper combat challenge that wouldn't look like retalitation for the previous failures(fluff and skill challenges are my speciality and so far I had little troubles with it).
Can you give me some advice on what kind of scale you use to tackle the most powerful builds of characters and their forces?