is there an undo button that I'm missing? I hate to delete a piece of land and have to pay for it, and place a wall to fill it as well. also, would be nice to have 3rd person durin the fighting to see how the weapons are performing.
There is no undo button, but if you delete items placed in the same build phase you get all your resources back. Also many blocks can be upgraded to give back 100% resources regardless of what wave or build phase you are on... Which I think is necessary for going into the long achivement category for survival!
I realised a single defensive wall very tight into my base ideally with two mines inside and then vertical towers with arms that have plasma guns and mortar on, I find machine guns a waste of time!
Correct. To generate M in-game, mine these squares. Mining will also give you some map-dependent rare minerals, as well. These are used for crafting.
I didn't know we can equip 2 weapons at once ! Very nice, don't have to wait for long reload in critical situations
Is this game really buggy, laggy, crashy - like Heroes & Casltes? By the way, Heroes & Castles is my fave game ever on iOS, so am not a hater!
In later stages you get more of them per round; building drill atop minerals also gives you chance for getting additional minerals.
What Lv is your character in game ? Get plasma pistol , it is much better than stock gun and at Lv 15 you get acces to plasma rifle can pretty much own first few waves without building any additional defenses.