diff --git a/project_constants.py b/project_constants.py
index 0d92497..dbbb3ee 100644
--- a/project_constants.py
+++ b/project_constants.py
@@ -17,7 +17,7 @@ V_NAME_OF_WINDOW = "MineFusion TM"
 DIR_ASSETS = os.path.join("resources", "assets")
 V_FPS = 60
 
-ACTION_INTERVAL = 0.5  # interval between two actions in seconds
+ACTION_INTERVAL = 0.75  # interval between two actions in seconds
 
 V_TILE_SIZE = 60
 V_GRID_VER_TILES = 10  # vertical (number of rows)
@@ -71,9 +71,9 @@ class Coords(Enum):
 
 
 class Terrain(Enum):
-    CONCRETE = 1
-    GRASS = 2
-    MUD = 4
+    CONCRETE = 2
+    GRASS = 4
+    MUD = 8
 
 
 # =============== #
diff --git a/searching_algorithms/a_star.py b/searching_algorithms/a_star.py
index 302c2b9..d7ddfd9 100644
--- a/searching_algorithms/a_star.py
+++ b/searching_algorithms/a_star.py
@@ -31,13 +31,12 @@ def get_node_cost(node: Node, minefield: Minefield):
     row = node.state.row
     column = node.state.column
 
-    # Rotation Cost??
     if node.action != Action.GO:
         return node.parent.cost + 1
 
     # if Tile considered its mine in cost calculation, this code would be priettier
     if minefield.matrix[row][column].mine is not None:
-        return node.parent.cost + 10
+        return node.parent.cost + 100
     else:
         return node.parent.cost + minefield.matrix[row][column].cost.value