Kingdom Rush Frontiers achievements

Build 3 Mechas on any one stage.

Set 20 enemies on fire at the same time.

Have your Mechas defeat 500 enemies.

Complete an underground stage without the hero dying.

Earn 45 stars.

Have your assassins dodge 1000 attacks.

Have 20 skeleton minions active at the same time.

Defeat 10 climbing enemies.

Find the secret message.

Change soldiers' rally point 200 times.

Find the singing frog.

Silence 70 spellcasters with the Spirit Totem.