Here is the full list of all 24 Second Wave Demo achievements.
Complete the Tutorial.
Reach level 2.
Successfully match a regular game.
Win 3 games in a row.
Earn SVP once.
Record 1 cumulative death in a game.
Record 20 or more kills in a game and win the game within 7 minutes.
Record 2 or more deaths within the first minute of the game.
Record 20 or more deaths in a single game and win the game.
Record fewer than five deaths in a game and win the game.
Record 30 or more kill contributions in a single game without getting a kill.
Spend a total of 10,000 gold or more in a single game.
Defeat an Automaton in a Domination Mode unassisted by a teammate.
Get 6 or more kills in a row in a three-way battle.
Earn 12 or more Arcane Stones in a single Stone Grab without killing or contributing to the kills of other players.
Do at least 30% of your team's total damage with Jemma.
Do more than 30% of your team's total damage with Jeremy.
Get 15 or More Kills in a Match as Batu
Deal 30% of Your Team's Total Damage as Jack
Record 25 or more assists in a single game as Bernard.
Record 20 or more assists in a single game as Merope.
Have 10 or Fewer Deaths and 10,000 or More Damage Taken in a Match as Bernard
Get 30 or More Assists in a Match as Spade Four
Get 15 or more kills in a single game of Ess'el.