So I wanted to do a pac man maze and at first I thought to draw over one with a tilemap and then give the solid behavior to the walls but it's quite a pita since it's hard to keep the same proportions of the original. Then I found this tutorial for Unity where he adds multiple collision boxes on the same maze. How would you do it on C2?
https://noobtuts.com/unity/2d-pacman-game
You can do the same in Construct 2. You create a sprite for colision box, set its initial visibility to invisible and position like in teh Unity tutorial.
That said, I, myself, would go for a tileset approach. I believe its better.
Cheers!