diff --git a/pom.xml b/pom.xml
index 1bf4742..549fe22 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,6 +15,14 @@
     </properties>
 
     <dependencies>
+        <!-- Lombok -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.30</version> <!-- Or latest -->
+            <scope>provided</scope>
+        </dependency>
+
         <!-- JavaFX modules -->
         <dependency>
             <groupId>org.openjfx</groupId>
@@ -23,4 +31,23 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <!-- Lombok annotation processor (optional but recommended for IDE integration) -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
+                <configuration>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                            <version>1.18.30</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 </project>
\ No newline at end of file
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/AttackScenario.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/AttackScenario.java
new file mode 100644
index 0000000..d212031
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/AttackScenario.java
@@ -0,0 +1,28 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+import java.util.List;
+import java.util.Optional;
+
+public class AttackScenario {
+    private List<Weapon> weapons;
+    private Optional<Reroll> hitReroll;
+    private Optional<Reroll> woundReroll;
+    private Optional<Reroll> damageReroll;
+    private boolean unmodifiableHit;
+    private boolean attackerWasStationary;
+    private boolean attackerCharged;
+    private boolean attackerInRapidFireRange;
+
+    private DefensiveProfile defensiveProfile;
+    private Optional<Reroll> normalSaveReroll;
+    private boolean hasHitPenalty;
+    private boolean hasWoundPenalty;
+    private boolean isInCover;
+    private boolean forceWoundsOnFoursIfLower;
+    private int damageReduction;
+
+    public void resolveAttack() {
+        // Attack step
+
+    }
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/DefensiveProfile.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/DefensiveProfile.java
new file mode 100644
index 0000000..1a68844
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/DefensiveProfile.java
@@ -0,0 +1,24 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+import lombok.Getter;
+
+import java.util.Optional;
+
+@Getter
+public class DefensiveProfile {
+    private final int toughness;
+    private final int normalSave;
+    private final Optional<InvulnerableSave> invulnerableSave;
+    private final Optional<FeelNoPainEffect> feelNoPain;
+
+    public DefensiveProfile(int toughness, int normalSave) {
+        this(toughness, normalSave, Optional.empty(), Optional.empty());
+    }
+
+    public DefensiveProfile(int toughness, int normalSave, Optional<InvulnerableSave> invulnerableSave, Optional<FeelNoPainEffect> feelNoPain) {
+        this.toughness = toughness;
+        this.normalSave = normalSave;
+        this.invulnerableSave = invulnerableSave;
+        this.feelNoPain = feelNoPain;
+    }
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FeelNoPainEffect.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FeelNoPainEffect.java
new file mode 100644
index 0000000..af2e8c3
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FeelNoPainEffect.java
@@ -0,0 +1,7 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+
+public class FeelNoPainEffect {
+    private int rollValue;
+    private FeelNoPainType type;
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FeelNoPainType.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FeelNoPainType.java
new file mode 100644
index 0000000..11a462c
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FeelNoPainType.java
@@ -0,0 +1,7 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+public enum FeelNoPainType {
+    ALL,
+    MORTAL_WOUNDS,
+    PSYCHIC;
+}
\ No newline at end of file
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FourtyKCalculatorApp.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FourtyKCalculatorApp.java
index 3c86779..dddea81 100644
--- a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FourtyKCalculatorApp.java
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/FourtyKCalculatorApp.java
@@ -20,16 +20,16 @@ public class FourtyKCalculatorApp extends Application {
 
         Button calculateBtn = new Button("Calculate");
         calculateBtn.setOnAction(e -> {
-            List<Target> targets = Arrays.asList(
-                    new Target("Rhino", 9, 3, null, 10),
-                    new Target("Lehman Russ", 11, 2, null, 13),
-                    new Target("Redemptor Dread", 10, 3, 5, 12),
-                    new Target("Knight Paladin", 13, 2, 5, 22),
-                    new Target("Plagueburst Crawler", 12, 3, 4, 12)
+            List<DefensiveProfile> targets = Arrays.asList(
+                    new DefensiveProfile("Rhino", 9, 3, null, 10),
+                    new DefensiveProfile("Lehman Russ", 11, 2, null, 13),
+                    new DefensiveProfile("Redemptor Dread", 10, 3, 5, 12),
+                    new DefensiveProfile("Knight Paladin", 13, 2, 5, 22),
+                    new DefensiveProfile("Plagueburst Crawler", 12, 3, 4, 12)
             );
 
             StringBuilder sb = new StringBuilder();
-            for (Target target : targets) {
+            for (DefensiveProfile target : targets) {
                 sb.append(calculate(target, 3, true, true, true, "melta"));
                 sb.append("\n");
             }
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/InvulnerableSave.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/InvulnerableSave.java
new file mode 100644
index 0000000..642db1a
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/InvulnerableSave.java
@@ -0,0 +1,18 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+import lombok.Getter;
+
+@Getter
+public class InvulnerableSave {
+    private final int rollValue;
+    private final InvulnerableType type;
+
+    public InvulnerableSave(int rollValue) {
+        this(rollValue, InvulnerableType.ALL);
+    }
+
+    public InvulnerableSave(int rollValue, InvulnerableType type) {
+        this.rollValue = rollValue;
+        this.type = type;
+    }
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/InvulnerableType.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/InvulnerableType.java
new file mode 100644
index 0000000..096ea28
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/InvulnerableType.java
@@ -0,0 +1,10 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+/**
+ * To which attack type the invulnerability save applies.
+ */
+public enum InvulnerableType {
+    ALL,
+    RANGED,
+    MELEE;
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Main.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Main.java
index 051d7ae..9cdaafe 100644
--- a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Main.java
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Main.java
@@ -2,6 +2,6 @@ package ninja.thefirearchmage.games.fourtykcalculator;
 
 public class Main {
     public static void main(String[] args) {
-        System.out.printf("Hello and welcome!");
+
     }
 }
\ No newline at end of file
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Reroll.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Reroll.java
new file mode 100644
index 0000000..0f274b8
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Reroll.java
@@ -0,0 +1,7 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+import java.util.Set;
+
+public class Reroll {
+    private Set<Integer> rerollableValues;
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Weapon.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Weapon.java
index 1b9170d..fff922b 100644
--- a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Weapon.java
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/Weapon.java
@@ -5,7 +5,9 @@ import java.util.Optional;
 public class Weapon {
     private int strength;
     private int ap;
-    private double averageDamage;
+    private int attacks;
+    private WeaponDamage averageDamage;
+    private WeaponRangeType rangeType;
     private int hitValue;
     private boolean hasLethalHits;
     private Optional<Integer> sustainedHits;
@@ -18,5 +20,8 @@ public class Weapon {
     private boolean hasHeavy;
     private boolean hasBlast;
     private boolean hasLance;
+    private boolean ignoresCover;
     private Optional<Integer> melta;
+
+
 }
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/WeaponDamage.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/WeaponDamage.java
new file mode 100644
index 0000000..b1dc279
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/WeaponDamage.java
@@ -0,0 +1,27 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+import lombok.Getter;
+
+import java.util.Optional;
+
+@Getter
+public class WeaponDamage {
+    private final Optional<Integer> diceType;
+    private final Optional<Integer> numberOfDices;
+    private final int flatDamage;
+
+    public WeaponDamage(int flatDamage) {
+        this(Optional.empty(), Optional.empty(), flatDamage);
+    }
+    public WeaponDamage(int diceType, int numberOfDices) {
+        this(Optional.of(diceType), Optional.of(numberOfDices), 0);
+    }
+    public WeaponDamage(int diceType, int numberOfDices, int extraDamage) {
+        this(Optional.of(diceType), Optional.of(numberOfDices), extraDamage);
+    }
+    public WeaponDamage(Optional<Integer> diceType, Optional<Integer> numberOfDices, int flatDamage) {
+        this.diceType = diceType;
+        this.numberOfDices = numberOfDices;
+        this.flatDamage = flatDamage;
+    }
+}
diff --git a/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/WeaponRangeType.java b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/WeaponRangeType.java
new file mode 100644
index 0000000..eacb7c1
--- /dev/null
+++ b/src/main/java/ninja/thefirearchmage/games/fourtykcalculator/WeaponRangeType.java
@@ -0,0 +1,6 @@
+package ninja.thefirearchmage.games.fourtykcalculator;
+
+public enum WeaponRangeType {
+    MELEE,
+    RANGED;
+}
diff --git a/src/main/resources/defensive_profiles.yaml b/src/main/resources/defensive_profiles.yaml
new file mode 100644
index 0000000..d1efdb0
--- /dev/null
+++ b/src/main/resources/defensive_profiles.yaml
@@ -0,0 +1,30 @@
+- intercessor:
+    name: Intercessor
+    toughness: 4
+    save: 3
+- sm_terminator:
+    name: Space Marine Terminator
+    toughness: 5
+    save: 2
+    invulnerability:
+      save: 4
+      type: ALL
+- sm_rhino:
+    name: Space Marine Rhino
+    toughness: 9
+    save: 3
+- impulsor:
+    name: Impulsor
+    toughness: 9
+    save: 3
+- land_raider:
+    name: Space Marine Land Raider
+    toughness: 12
+    save: 2
+- questoris_knight:
+    name: Questoris Class Knight
+    toughness: 12
+    save: 3
+    invulnerability:
+      save: 5
+      type: RANGED
\ No newline at end of file
diff --git a/src/main/resources/weapons.yaml b/src/main/resources/weapons.yaml
index 8d1e74f..41f6eae 100644
--- a/src/main/resources/weapons.yaml
+++ b/src/main/resources/weapons.yaml
@@ -1 +1,32 @@
-melta:
+eradicator_melta_rifle:
+  name: Melta Rifle (Eradicator)
+  attacks: 1
+  range_type: RANGED
+  damage:
+    dice_type: 6
+    number_of_dices: 1
+  melta: 2
+  ap: -4
+  toHit: 3
+  strength: 9
+  isHeavy: true
+eradicator_multi_melta:
+  name: Multi-Melta (Eradicator)
+  damage:
+    dice_type: 6
+    number_of_dices: 1
+  attacks: 2
+  range_type: RANGED
+  melta: 2
+  ap: -4
+  toHit: 4
+  strength: 9
+  isHeavy: true
+intercessor_bolt_rifle:
+  name: Bolt Rifle (Intercessor)
+  attacks: 2
+  damage: 1
+  ap: -1
+  toHit: 3
+  strength: 4
+  isHeavy: true
\ No newline at end of file