Here is the full list of all 20 Force of Elements achievements.
Win 20 Battles.
Create 50 Bombs.
Win 5 battles in a row.
Play 10 games in Timed mode.
Deal 12,000 damage to opponents.
Play a game with 5 different auras.
Create 500 Power Gems by matching gems.
Own 1 additional hero skin.
Create 50 Amplifier Gems by matching gems.
Make 100,000 gem matches.
Play 10 games in Moves mode.
Play 100 games in any mode.
Battle a friend in a direct challenge game.
Purchase a Level 2 Aura.
Reach Mastery Level 20 with Ki.
Reach Mastery Level 20 with Sol.
Reach Mastery Level 20 with Sir Vaskos.
Reach Mastery Level 20 with Tarkin.
Reach Mastery Level 20 with Phasmus.
Reach Mastery Level 20 with Mudruk.