Great game, though a bit on the easy side. As I'm writing this I have a score of over 100k and am not sure if I want to continue or just end it. It took me I think 5 or 6 tries to get this far and I don't even have all the best upgrades.
It would be great if there were a few more bosses and if at a certain point you never got any more anchors because otherwise I could just keep going for hours without dying.
Overall, great game just a little short and final boss a bit to easy.