Helped create a Nuclear Lobster
Once you have built a Matter Transformifier, you can create Metamorph Carrots, then give your Gravity Lobster a Metamorph Carrot and this will turn it into a Nuclear Lobster, you might want to make two Lobsters first though, if you didn’t, just break the Lobster, pick up a piece and then place it back and you’ll have your original Gravity Lobster back.
Got past the meteor
After you get given the Strength potion, you’ll be able to break the meteor that is blocking your path, just press :x: at it a couple of times and it will be gone, earning this achievement.
Helped build the Ubertronic Dynabot
This is the second last building you’ll need to build, just keep building everything to progress through the game, you’ll need to give every animal building a Metamorph Carrot to access all the resources required, so you might be better to build two of each of those, once you have built the Ubertronic Dynabot, the achievement will unlock, completing the DLC achievement pack, although to see the ending of the DLC, you’ll need to complete the last building.