I actually enjoyed it. It had flaws, but only real problem I have with it is the bullet at the end, some time frame problems, but nothing major imo
Also I liked that they made Victor and Dog from origin one person. I think movie is from time that many thought that they may be one and the same, only like few months ago we saw what happend to Dog in WatX-M so yeah... it gave us some sweet montage and other cool stuff (I could have whole movie of just them on the wars and betweent them tbh)
Oh and don't make me started on bone claws... and the fact that in X1 or X2 it was stated the were man made... even in comics before magneto did his thing, everyone was thinking that they were man made... also Xavier (or whoever said it) could be just wrong
I would love to actually see some more of this Victor in next movies...