Okay, here are [my ideas for] achievements:
I think what would need to happen is for one of them, have a "game" area, and the other just normally playing US.
Now, for NORMAL...
- First system - Open a system
- Happy Hour (yes, typical) - First full hour
- Full Day - Play a total of one day
- 24/7 - play a total of one week
- Earth maker - place 5 earths
- Jupiter maker - place 5 jupiters
- extrasolar - Make a 5 MJ planet
- Hydrogen Fusion - Make a planet turn to a star (i remember making Jupiters collide till they had the sun texture, but Jupiter colored, idk if you can still do that
- Addicted - play a total of 1000 hours
Now for the Game area. I was thinking in the game area, you had a list of challenges, and maybe there could be user submitted challenges later (WAAAAAAAAAAAAAAAAAAAAAAAAAAAY later). I know! Maybe on the Universe sandbox site there can be a community area, with peoples Uploaded creations, and profiles, with their achivements in their profile. And depending on what achivements you got, you get points, which give you a rank, just to say how many you got? Kind of like on
http://modnation.com/Challenges (I say call them "Test your skills")
- Shoot an Earth at Jupiter from a distance of over (1,000,000; 2 million, 5 million) km
- Shoot an Earth at Jupiter from a distance over (1,000,000; 2 million, 5 million) km and have it consume a moon
- Shoot a small object (<5 km) past the Moon (orbiting Earth) from over 100,000 km away and have it come within 500 km of the surface
- ... then have it come back within 5 orbits of the moon within 5000 km
- Shoot a small object past any two objects the size Ceres or bigger (could be a "General" but would work better if a Ceres and a Europa (for example) were set in stable orbits around an Earth) and have the object come within 10,000 km of both within 3 orbits of the [outer one]. (probably quite complicated)