Last level is just terrible. First time through I wasn't L6 by the end and didn't know how to get a menu so just reloaded and found myself back at level 1. On subsequent attempts the key beyond the level 5 gate hasn't actually unlocked the gate, it's still barred and I can't get to the level 6 gate that I can now pass...
I quite like this, it's sorta tower defence cum shoot em up and plays nicely.
But I'd love to be able to zoom in/out, and it also begs for a fullscreen option.
Weapon balance is appalling; spread or double machine gun>>>every other weapon there is. Apocalypse cannon can be OK to clear away the heavily armoured stuff, but basically only being able to fire one weapon at a time is a major downer. Really rather easy too.
I really struggled with 10, but once there, 11 was almost trivial...seems to be the other way around from everyone else....guess I must just be "different"...