Well it needs instructions apparently because it does have "health packs". Just mouse over the right side of the screen and purchase recovery or one of the many other upgrades. It is a fun game but needs more levels and possibly some more interesting mission objectives other than just kill everything. Also some additional upgrades to the weapon like maybe dual shot, frag shot, etc. Needs more levels too.
 "Idle 2.: Konquest"){kind=icon}
 "Frontline Defense Beta 2"){kind=icon}
 "Tank 2007"){kind=icon}