Here is the full list of all 20 Terrian Saga: KR-17 achievements.
Kill a chippy in mid air!
Some scribbles on the cave walls read, "Storage Bay 2"
Complete game killing NO Chippies!
Complete game killing ALL Chippies!
Collected 500 gears!
Collected 1000 gears!
It's the bigger love of the family!
Collected 2500 gears!
Aww, you beat the game on easy!
Now you can play the game on hard.
You beat it while hard.
Wood is a precious commodity on Valiant, regrowth requires special care.
This appears to be an escape route.
Someone used this as a hideout - but from what?
There was a captain here, looks like he ran before it shut off.
Behind you in the distance is a colossus, it appears to be broken in half. Perhaps someone wanted something on the inside?
There is a button with the word, "RE-ROUTE" scribbled over it.
It's a High Hide. A High Hide. See you go up and you hide, high.
This seems to be another escape route to the caves.
2 soldiers hide in a cell. Looks like these ones didn't make it.