Take HellGunner, remove all of the different enemies, pickup/health, and strip it down to a small map and you get this. Both apparently by the same developer (EHTechnology).

Take [url=http://psteamproxy.yuanyoumao.com/app/618120/HellGunner/]HellGunner[/url], remove all of the different enemies, pickup/health, and strip it down to a small map and you get this. [url=http://psteamcommunity.yuanyoumao.com/app/771440/discussions/0/1693785035827324890/]Both apparently by the same developer[/url] (EHTechnology).