Assist discovering a outdated recreation I used to play

Hello, il searching for a 2D zombie point-shoot mechanic recreation I used to play. It have the identical artstyle as “They Are Coming: Zombie Protection”. Identical pixel fashion and gloomy. However the recreation I’m searching for is predicated indoors in a haalway, with no major objective in thoughts besides to kill zombies to go to the subsequent degree.

And objective of the extent was to achieve a door that takes you to a different degree. However identical degree design, the one issues that adjustments is the quantity of zombies, varieties and such.