Best Ideas for Microbe Stage Achievements

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

Can we include anaerobic and aerobic achievements, as long as they are simple enough?

@50gens

First oxgen breather: Be the first organism to develop oxygen resistance

@AnthropocenianAge

Who needs Oxygen? - Become a Eukaryotic organism with an anaerobic metabolism using Hydrogenosomes.