Full list of all 57 Size Matters achievements. It takes around 0-1 hour to unlock all of the achievements in the base game on Windows.
The base game contains 6 achievements, and there are 4 DLC packs containing 51 achievements.
Take a shower!
(x_x)
You saved yourself in the last minute!
You mixed the wrong ingredients, luckily nothing blew up!
Use Chemical Processor successfully for the first time ever!
A thanks from developer for playing Size Matters!
Use Chemical Reverter for more than 10 minutes!
Use Restorer for more than 10 minutes!
Check out the HUMAN SKELETON!
Win the round when you have reverted 5 or more ingredients!
Find all ingredients in 30 seconds or faster!
Complete a round on "Tiny" mode
Complete a round on "Low Gravity" mode!
Use Microwave for more than 10 minutes!
Use Code Combiner for more than 10 minutes!
Use Chemical Processor for more than 10 minutes!
Consume one cupcake!
Open drawers and cabinets more than 100 times!
Find ALL pickups in ALL laboratories!
Find all pickups in Laboratory 6!
Find all pickups in Laboratory 5!
Find all pickups in Laboratory 4!
Find all pickups in Laboratory 3!
Find all pickups in Laboratory 2!
Find an alien creature!
Spend more than 5 seconds in air without touching ground
Find all pickups in Laboratory 1!
Break all plates and mugs in the Kitchen!
Empty out the fridge!
Maybe try being a bit more careful? :(
Find love in the kitchen!
Open drawers and cabinets more than 1000 times!
Win 10 or more rounds!
Successfully use the Restorer!
Win at least one round on all available laboratories!
Enlarge 3 or more objects in a single round!
Open all drawers in the laboratory at least once!
Spend more than 1 minute in the play menu!
Win a round without picking up any object other than ingredients
Win a round in under 7 minutes!
Enter a correct code into the Code Combiner!
Shrink until you're too small!
Open the same drawer 10 times!
Get hit by ~microwaves~!
Finish the level without jumping!
Finish the level with all "Processing Time" sliders to the max!
Get inside the green plastic bin!
Finish the level without formulas and ingredients touching the floor!
Finish the level with 1.5 meters height left or more!
When breakable flasks are enabled, break at least one at very high speed!
Complete a round on crazy difficulty!
Complete a round on hard difficulty!
Complete a round on normal difficulty
Destroy the TV in Laboratory 3!
Have 20 concurrent water flasks!
Save yourself without having to use the Reverter!
Complete a round on beginner difficulty! Baby Steps!