First and foremost the only limit to what your PC wants to try and do/accomplish/perform is your imagination and relationship with the dice, the harder/cooler/more professional the thing you are trying to do the higher the rolls to get it done - naturally

I believe in creating stories/quests with the players rather than "railroading" them down how I think it should play out. So this means that if your group gets stuck on a tangent/dead-end, i will follow where you are leading and react accordingly. It’s all about character development, and, how you get there is just as important as where there is.
I've been accussed of testing the ethics/morals/alignment of characters in the past so I guess I should mention that. Every situation will not work out 100% how you want it too unless you put in the creativity/effort to get that result.
In a nutshell:
Risk = reward
Actions = consequences