As said in the blog for the 2016 road map, the US2 team wants to add achievements and asked for some recommendations for achievements, so I wanted to start a thread discussing and sharing ideas!
My ideas:
Go Green!
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Raise a planets Earth similarity to .75 or above.
Slow Down! (multi staged achievement)
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Launch an object at the at a particular speed and have it collide with another body.
4 tiers: 1,000- 10,000- 100,000- The speed of light.
Shoulda' put a ring on it!
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Apply 50 rings in total bodies