Shattered City for Android
The player gets into a gloomy but rather beautiful world full of mutants and destroyed technogenic landscapes. Among weapons you will find a plasmagun with endless charge, limited by a kind of overheat caused by long series of shots.
To pass the location you need to kill all mobs and the level boss. You will get a reward for passing and it can be spent for character upgrade, buying weapons and mastering skills. There is a rather good range of available items of outfit.