This is another achievement that requires replaying the levels to get more points, pretty sure you'll need around 9,000 points to get a secondary goal in each level, these secondary goals are useful for getting more points by completing them, examples include saving the Aliens and the other toys in Daycare Dash for example, the more goals you unlock and complete, the more points you'll get, and it will be a lot easier to get platinum medals in the levels
Warning: This game is pretty glitchy in terms of the achievements, most of the time, you'll only get 1 achievement after you beat a stage, even though a lot of times, you'll should have gotten multiple at once. So i don't recommend going for a lot of achievements until you get a good chunk of the easy ones
If you're having trouble with the achievements popping, beat the Daycare Dash level as Buzz and it will force the achievements to pop (for whatever reason), you'll need to unlock Buzz in Daycare Dash first, so don't worry about collecting achievements for now, just enjoy the game for a while and then go for the achievements.