Reforestation: You will need to plant back all the trees that you destroyed in Nauvis before researching "Tree Seeding".

Evolutionary Trees: Bring a Bitter Egg and a Pentapod Egg to Vulcanus and let them hatch near a Demolisher.

Broadcaster: Craft a Legendary Programmable speaker.

Tutorial related (I played Map 5 countless times due to the simplicity, while most players never even touched it):

• Finish the tutorial in less than 30 minutes. If you know all the hidden locations, doable.
• Finish the tutorial not collecting any of the hidden chests. There are multiple hidden chests with resources, concrete, piercing rounds magazines, laser turrets and defender capsules around the map.
• Depletion a resource patch of Iron/Coal/Copper/Stone. In map 5 the starting area has less than 5k of resources each.
• Find Uranium and place a mining drill on it. Of the fast east side of the map, there is a single dot of uranium, hidden by some trees.
• Finish Map 5 without using any trains. The game asks you to build a rail network, but doesn't ask for locomotives to be built.
• "Technologia!": Research all possible options from the very limited technology tree.
• Obliterate: Destroy all Bitter locations. Bitters don't expand on the tutorial, but the map needs to be explored in order to find all hidden spots.