Here is the full list of all 11 ROUNDS achievements.
Win 5-0
Win 3 matches in a row
Block 10 times in 10 seconds
Deal 500 DMG with one bullet
Have 30 of your own bullets on screen at the same time
Pick 3 or more rare cards in one match
Reach 1000 HP
Heal 500 HP in one round
Fire a bullet with over 350% projectile speed
Have 4 cards that interact with your block
Win a match