Full list of all 24 Collisions achievements.
The base game contains 15 achievements, and there are 3 DLC packs containing 9 achievements.
Clear 5 mosquitoes
Find 5 bonus solutions
Travel over 10 kilometers
Complete over 100 minigames
Find all bonus solutions
Travel over 5 kilometers
Win the minigame 5 times in a row
Win the minigame
Clear the bugs with 100% accuracy
Clear over 100 bugs
Complete all puzzles
Complete every puzzle without making a mistake
Find one bonus solution
Travel over 1 kilometer
Complete one puzzle without making a mistake
Witness an annual meteor shower
Witness the sunset during an equinox or solstice
Witness the rise of a full moon
Clear the table five times in a row
Clear the table three times in a row
Clear the table in Opie's pinball
Catch the fireworks on the last day of the year
Experience a malfunction on the most unlucky day of the year
Feel the earth tremble on the rarest day in the calendar