Here is the full list of all 24 Anomaly Agent achievements worth 1,000 gamerscore.
Defeat the Gravity Anomaly.
Defeat the Wrestler.
Defeat the Alpha Defender.
Defeat the Artist.
Earn 30 negative emotions.
Earn 30 positive emotions.
Choose the Eva ending.
Choose the Hooded Man ending.
Stuck in the loop.
Defeat the elites.
Buy 25 upgrades.
Interact with arcade machines 8 times.
Break 20 glasses.
Break 50 items. (Glasses excluded)
Kill an enemy by throwing an empty gun.
Kill 20 enemies with Bat Launch.
Kill 30 enemies with Sword Finisher.
Kill 30 enemies with Hammer Finisher.
Kill 40 enemies using your environment.
Kill 20 enemies with Anomaly Power - Giant Punch.
Kill 20 enemies with Anomaly Power - Coin.
Break enemy merge 5 times.
Meet the Warden.
Open all chests.