its te greatest shooter ive ever played on a console. Awesome, unrelenting gunplay, up close exucution moves never get old. Spawn evil minions with wielding axes or chainsaws (if i remember correctly) to do your dirty work, impale people with your tentacles, have the darkness eat their hearts to improve itself ( which also never gets old.) , and along with all this, gorgeous graphics. do me a favor, watch both of these, it will have you sold for sure. heart devouring video
http://youtube.com/watch?v=d-mLpvEHFGs&feature=related and execution move video
http://youtube.com/watch?v=2xtdRORyvBo
Vamp is right, there are some slow parts, but not many, and there more than enough to make up for it.
Chrono, i may have misled you with Mass Effect, but not with this one.