Here is the full list of all 21 Life Goes On achievements.
One thousand knights squandered.
Our equipment design does not account for your inefficiency
Where have I heard that scream before?
You killed Jim the Prolific and stopped the problem at the source.
Some days you just want to sacrifice some knights.
What does the fuzzy thing do?
How many knights can you lose on Straight to the Point?
How did you do that?
Prune Jim's family tree, one branch at a time.
Nothing to see, move along.
Maximum misfortune in Maximum Security.
Jeff is satisfied.
Beating all the clocks.
Mercy is its own reward, so have a prize!
That's... a lot of badges.
One body does not count as a Carpet.
Prove that you are the master of Tenuous Links.
No skips. No restarts. One run. How fast can you go?
SPAAAAAAACE!
Check point two, check point one to prove your skill on Equal and Opposite.
You have proven that anything can be achieved through the sacrifice of minions.