Full list of all 15 Drone Gladiator (Windows) achievements worth 2,000 gamerscore.
The base game contains 10 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 5 achievements worth 1,000 Gamerscore.
You are a real survivor
You defeated the Treader, you are now a true gladiator!
You destroyed 100 enemies
Hold your breath!
You survived 10 waves, awesome!
You survived random event, fortune is on your side!
First step on a path of a true gunslinger
You destroyed 50 enemies, good job!
You are now a decent sword fighter
You destroyed 10 enemies
Destroy 10 teleporters
Destroy 10 enemies with rockets
Take the first boost
Destroy 10 enemies with hammer
Make a first purchase