Some of the guns are in the wrong place like for example the raging bull .44, nitro express, mac 10 and other guns and have a place of their own like machine-pistol and the magnums and not place under the pistol section since it is misleading. Also there is non-upgradable guns and since there is no way to upgrade your guns then is harder to play.
There should be a button that lets you expand the building so there would be more space for things you want to put in your evil base. Also how does tourists know the exact location of your base and ACTUALLY parachute into your base.
Fun Tip: Put two doomsday devices together: one cultist temple and one biogenetic lab together have a personal and have a personal war against cultist and freak in your base . For even more better results, put it in the middle f your base (third floor) and have a three way war. Freak, cultists, and your enemies...
A great game at first but later through the game you have many perks but not enough space. An idea would be to buy perk space to fill it with better perks to make the game more easier and better to play without all those decisions of which perk to choose.