I like the idea! Super fun! Tough with the tank controls when moving on the walls, but I played OG Tomb Raider so I got used to it quick - but a tutorial / controls explanation would be good.
I will say, my computer has trouble running unreal games, so I only get 5 frames per second, so keep that in mind if you want to try getting more people to play the game.
Overall, a great experience, just wish I could have played more since it was a fun idea!