Here is the full list of all 19 Counter-Strike: Global Offensive trophies - there are 3 bronze, 6 silver, 9 gold and 1 platinum.
Collected all other CS:GO trophies
Kill an enemy while they are reloading
Win a knife fight
Kill a zoomed-in enemy sniper with a sniper rifle of your own
Kill an airborne enemy
Kill an enemy with the last bullet in your magazine (excluding sniper rifles and Zeus x27)
Kill an enemy while you are blinded from a flashbang
Win a round by picking up the bomb from a fallen comrade and successfully planting it
Kill an enemy with the first bullet after your respawn protection ends in Arms Race mode
Kill four enemies within a single round
In Classic mode, kill five enemies in a single round
Kill an enemy who is leading the hostages without injuring the hostages
Be the first player to get a kill in an Arms Race or Demolition match
Survive more than 30 seconds with less than ten health in Arms Race or Demolition mode
Kill a player who is on gold knife level in Arms Race Mode
Kill an enemy who is dominating you
Dominate an enemy
Kill an enemy whom you are already dominating
Win an Arms Race match without dying