holy cr*p this looks insane!
Although TBH I don't think Construct is meant for that kind of game, it looks really hard to make. There is also no collision detection (right?) and no pathfinding, and pretty much nothing works out of the box, so I would definitely be using an alternative solution if planning to make "doom" like games.
However, maybe Construct DEV guys decide to make something easy (and lightweight) that would allow us to make pseudo-3D games (I'm dying for a solution that will allow us "outrun" type of driving games)