How to pass levels 1-4 of Concave-convex World Decryption? Decrypting levels in the concave-convex world is relatively difficult, and in the fourth level, you need to kill all enemy units within 2 rounds. The following editor will bring you a guide to the fourth level of decrypting the level.
Kill all enemy units within 2 rounds.
1. First go to the mechanism in the lower right corner and turn on the mechanism.
2. Go to the mechanism location in the upper right corner and turn on the mechanism.
3. Go to the customs clearance entrance in the upper left corner.
4. Just follow the location of the mechanism and trigger it.