Ok, Two Things: Shouldn't the hard achievement be Ancient God Killer rather God Killer? And Why isn't there different kinds of weapons? Just swords? I'd like bows and staves and axes. That would be good in my opinion, and I am happy to see a sequel, if there will be one.
Ok, here is an idea: There should be a daily spin for stuff. For Instance, you can possible get fuel, resources, weapons, components, etc. Also, everyday there should be a return bonus for 2 days, 5 days, 7 days, and so on. I hope that maybe this is heard and taken into consideration.