Best Ideas for Microbe Stage Achievements

[AnthropocenianAge (AnthropocenianAge Arthropleura wants to give you a hug!)]

How about some from Achievements (See below):

Achievements

Radioactive - Make an organism that survives solely on Radiation.

@Untrustedlife

“Truly a plant”
Evolve a microbe with a chloroplast, a nitrogen fixing plastid and a cell wall.

@Solitarian

Ferrovore - complete the microbe stage using only rusticyanin