I beat it the other day. For a game I got for free from a friend, I loved it. I played it on the casual difficulty level so if I ran into an issue with a boss it was usually just a matter of finding the right weapon for them or the right strat. I was stuck on the Ogre (the big chain head guy) for a while, but when I got the right weapon he was cake. Collecting all the modules, weapons, heart chambers, and seeds took the most of my time. I missed a couple achievements, but I'm happy with what I did.