You will NEED a 3D modelling package for this one! But here’s how to set up custom collisions in UE4 (not complex to simple, ugh).
Document: https://docs.unrealengine.com/latest/INT/Engine/Content/FBX/StaticMeshes/#collision
File: https://drive.google.com/open?id=0B4babORM1Vv4RGRFWEhuQW9mUVE
Twitter: https://twitter.com/Play_Ruff
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