Reduced difficulty for Android

Having received feedback that the Android version  difficulty was set a bit too high. I have reduced  elements of difficulty on Android version;

Level 1,2,3,4

Stone monster damage was 100 now 50  

Raptor  damage was 50 to 25 

Alien spider damage  120 now  50  

Also improved performance on mobile by reducing all textures to 1024  as opposed to 2048 or even 4096