src/main/java/Bäckahäst.java

@@ -0,0 +1,2 @@
+public class Bäckahäst extends Monster implements CanMove, CanAttack {
+}

src/main/java/Troll.java

@@ -0,0 +1,2 @@
+public class Troll extends Monster implements CanMove, CanAttack {
+}

src/test/java/MonsterTest.java

@@ -69,4 +69,19 @@ public class MonsterTest {
     void monster_cannot_do_anything_when_out_of_energy() {
 
     }
+
+    @Test
+    void only_moves_within_energy_budget_are_performed() {
+
+    }
+
+    @Test
+    void move_to_invalid_destination_is_rejected() {
+
+    }
+
+    @Test
+    void use_of_attack_not_in_arsenal_is_rejected() {
+
+    }
 }