You can use the mod version of the Tap Titans 2 to update your guns and use diamonds or gems.  You can play daily games and earn gold each day. The player can get diamonds by seeing video ads. You can connect your social media accounts(Facebook, Twitter) with the game and get 50 diamonds. On the other side if you complete the levels then you will get some diamonds. Or if you do not Do all of these things then you use the mod version of the Tap Titans 2 Mod apk.