Dark Souls is fucking fantastic if you have a controller. Steep learning curve, but eventually you get the balls to try things out. I recommend you fix the game though, so it doesn't look awful and unlock FPS to 50 - 60. Site for that: Dark Souls: Prepare to Die Edition - PCGamingWiki PCGW - Bugs, fixes and workarounds
OP did buy from Amazon, I use Video Game Deals and cross-compare before I buy.