XCOM: Enemy Within (Android)
CheatingDome.com
Armour color
You can change the colour of your soldier's armour, which helps you identify your different units more efficiently.
Enhancements
Medals and genetic enhancements make losing soldiers even more crushing than ever. Keep your crew safe.
Overwatch
Rush to get those Meld canisters, but put other soldiers on overwatch nearby to protect your gatherers.