Subscribe to download
Effects

How to open the challenge.
(if you don't do this then it will appear as a blank challenge.)

Step 1. Go to scrap mechanic workshop and make sure you have Scrap Mechanic Effects

Step 2. Goto C:\Program Files (x86)\Steam\steamapps\workshop\content\387990 Copy the folder called 2263027495

Step 3. Goto C:\Program Files (x86)\Steam\steamapps\common\Scrap Mechanic\Data and paste it

Step 4. Goto C:\Program Files (x86)\Steam\steamapps\common\Scrap Mechanic\ChallengeData\Objects\Database
Open ShapeSets

Step 5. Add this Line "$GAME_DATA/2263027495/Objects/Database/ShapeSets/parts.json", after this line "$SURVIVAL_DATA/Objects/Database/ShapeSets/ammo.json",

Step 6. You should now be able to lanuch the challenge.