There's no point having random evolutions because you just save and reload a lot. Either that needs to be counteracted (i.e. autosave on menu open) or remove the random. Otherwise it's a waste of everybody's time.
Also, needs some way to save evolutions when you leave the menu!
Kazama, please don't make the game any easier than it already is. It's challenging at the start but not undoable, and in the later levels it becomes so easy it's just a case of building a few towers and hitting send wave.
Resistances can be found in the help menu and the first level isn't that impossible people. It's only hard if you stick to the same tactics that worked in the previous version.