Ka-BOOM! Achievement

Ka-BOOM! is an open progression achievement in Minecraft Dungeons II. Its unlock condition is precise: defeat 10 mobs with a single TNT blast. All ten kills must come from one explosion, so setup matters more than firepower.
How it happens
TNT appears in missions as an explosive you can trigger. The achievement only counts when a single detonation takes out ten enemies at once, so small groups will not do it — you need a dense pack of mobs standing inside the blast.
Tips for unlocking it
Look for moments where enemies cluster: spawners, choke points, or waves that funnel mobs together. Weaken the group with your weapons first, then let the TNT finish all ten — the kills must land on the explosion, not on your attacks. Patience beats brute force here: wait until the pack is big enough rather than wasting a good blast on five or six mobs. Co-op runs in Minecraft Dungeons II Multiplayer Guide can help, since a partner can herd or hold enemies in place while you set up the shot. If you are already grinding kills for Y-Axis Unlocked, keep an eye out for TNT near large groups to chase both goals at once.

