2D Spline Terrain blueprint allows you to create a 2D/2.5D level very quickly! No placing hundreds of ground sprites or manually tweaking colliders. Just create your spline shape. Edges switch texture automatically, and colliders will be created automatically too!
Documentation here: https://drive.google.com/file/d/1NxFCTv1nNVD6om28rzCgwjEbK26Yn60R/view?usp=sharing
Available on Unreal Marketplace: https://www.unrealengine.com/marketplace/en-US/product/2d-spline-terrain