Well..
Okay, I have to say that the upgrades REALLY didn't help me. I was loaded with 3 turrets and 4 mines around my base, and NONE of them executed, and, lo and behold, the little blue-hatted (hat-ed not hated) fuckers started coming, and fuck! They murked me! I thought I was like the ultimate base!
Please make the upgrades more effective, otherwise, you would have DEFINITLY earned a 5 from me. Sorry mate, only a 3.
(Yes, it seems cruel, but your song was also looped and started to bother me.)
~Trix