diff --git a/packages/website-ue/src/core/tankopedia/characteristics.ts b/packages/website-ue/src/core/tankopedia/characteristics.ts
index 45aebe78e..48c9347ce 100644
--- a/packages/website-ue/src/core/tankopedia/characteristics.ts
+++ b/packages/website-ue/src/core/tankopedia/characteristics.ts
@@ -6,7 +6,7 @@ import {
 } from "@protos/blitz_static_tank_upgrade_single_stage";
 import { radToDeg } from "three/src/math/MathUtils.js";
 import { applyPitchYawLimits } from "./applyPitchYawLimits";
-import type { TankState } from "./tankState";
+import { TerrainHardness, type TankState } from "./tankState";
 
 export type CharacteristicOutput = number | number[] | null;
 
@@ -282,33 +282,28 @@ export const characteristics = {
     return attribute(TankAttributeChange_AttributeName.ATTRIBUTE_NAME_MASS);
   },
 
-  terrain_coefficient_hard({ attribute }) {
-    return attribute(
-      TankAttributeChange_AttributeName.ATTRIBUTE_NAME_TERRAIN_RESISTANCE_HARD
-    );
+  terrain_coefficient({ attribute, state }) {
+    let name: TankAttributeChange_AttributeName;
+
+    switch (state.terrainHardness) {
+      case TerrainHardness.Soft:
+        name =
+          TankAttributeChange_AttributeName.ATTRIBUTE_NAME_TERRAIN_RESISTANCE_SOFT;
+        break;
+      case TerrainHardness.Medium:
+        name =
+          TankAttributeChange_AttributeName.ATTRIBUTE_NAME_TERRAIN_RESISTANCE_MEDIUM;
+        break;
+      case TerrainHardness.Hard:
+        name =
+          TankAttributeChange_AttributeName.ATTRIBUTE_NAME_TERRAIN_RESISTANCE_HARD;
+        break;
+    }
+
+    return attribute(name);
   },
 
-  terrain_coefficient_medium({ attribute }) {
-    return attribute(
-      TankAttributeChange_AttributeName.ATTRIBUTE_NAME_TERRAIN_RESISTANCE_MEDIUM
-    );
-  },
-
-  terrain_coefficient_soft({ attribute }) {
-    return attribute(
-      TankAttributeChange_AttributeName.ATTRIBUTE_NAME_TERRAIN_RESISTANCE_SOFT
-    );
-  },
-
-  power_to_weight_hard() {
-    return -Infinity;
-  },
-
-  power_to_weight_medium() {
-    return -Infinity;
-  },
-
-  power_to_weight_soft() {
+  power_to_weight() {
     return -Infinity;
   },
 
@@ -318,15 +313,7 @@ export const characteristics = {
     );
   },
 
-  hull_traverse_speed_hard() {
-    return -Infinity;
-  },
-
-  hull_traverse_speed_medium() {
-    return -Infinity;
-  },
-
-  hull_traverse_speed_soft() {
+  hull_traverse_speed() {
     return -Infinity;
   },
 
diff --git a/packages/website-ue/src/core/tankopedia/characteristicsOrder.ts b/packages/website-ue/src/core/tankopedia/characteristicsOrder.ts
index e30be15f1..626534079 100644
--- a/packages/website-ue/src/core/tankopedia/characteristicsOrder.ts
+++ b/packages/website-ue/src/core/tankopedia/characteristicsOrder.ts
@@ -65,18 +65,10 @@ export const characteristicsOrder: CharacteristicsOrder = [
       { name: "engine_power", units: "bhp" },
       { name: "weight", units: "t" },
 
-      { name: "terrain_coefficient_hard" },
-      { name: "terrain_coefficient_medium" },
-      { name: "terrain_coefficient_soft" },
-
-      { name: "power_to_weight_hard", units: "bhp_t" },
-      { name: "power_to_weight_medium", units: "bhp_t" },
-      { name: "power_to_weight_soft", units: "bhp_t" },
-
+      { name: "terrain_coefficient" },
+      { name: "power_to_weight", units: "bhp_t" },
+      { name: "hull_traverse_speed", units: "deg_s" },
       { name: "turret_traverse_speed", units: "deg_s" },
-      { name: "hull_traverse_speed_hard", units: "deg_s" },
-      { name: "hull_traverse_speed_medium", units: "deg_s" },
-      { name: "hull_traverse_speed_soft", units: "deg_s" },
 
       { toy: "traverse" },
     ],
diff --git a/packages/website-ue/src/core/tankopedia/tankState.ts b/packages/website-ue/src/core/tankopedia/tankState.ts
index 6c3f79183..382ac6d63 100644
--- a/packages/website-ue/src/core/tankopedia/tankState.ts
+++ b/packages/website-ue/src/core/tankopedia/tankState.ts
@@ -1,10 +1,16 @@
+export enum TerrainHardness {
+  Soft,
+  Medium,
+  Hard,
+}
+
 export interface TankState {
   stage: number;
-
   shell: number;
   speed: number;
   isHullTraversing: boolean;
   isTurretTraversing: boolean;
   isShooting: boolean;
   isGunDamaged: boolean;
+  terrainHardness: TerrainHardness;
 }
diff --git a/packages/website-ue/src/stores/tankopedia.ts b/packages/website-ue/src/stores/tankopedia.ts
index 209acc48d..deccca892 100644
--- a/packages/website-ue/src/stores/tankopedia.ts
+++ b/packages/website-ue/src/stores/tankopedia.ts
@@ -1,5 +1,5 @@
 import { Varuna } from "varuna";
-import type { TankState } from "../core/tankopedia/tankState";
+import { TerrainHardness, type TankState } from "../core/tankopedia/tankState";
 
 interface Tankopedia {
   protagonist: TankState;
@@ -14,5 +14,6 @@ export const Tankopedia = new Varuna<Tankopedia, number>((maxStage) => ({
     isShooting: false,
     isTurretTraversing: false,
     speed: 0,
+    terrainHardness: TerrainHardness.Hard,
   },
 }));