diff --git a/pyproject.toml b/pyproject.toml
index 9c9b37f..ed04445 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ requires-python = ">=3.10"
 dynamic = ["version"]
 
 dependencies = [
-    "retro-data-structures>=0.23.0",
+    "retro-data-structures>=0.28.0",
     "jsonschema>=4.0.0",
     "ppc-asm",
     "py_randomprime",  # for Prime 1 symbols
diff --git a/src/open_prime_rando/echoes/schema.json b/src/open_prime_rando/echoes/schema.json
index 6decb11..29fec93 100644
--- a/src/open_prime_rando/echoes/schema.json
+++ b/src/open_prime_rando/echoes/schema.json
@@ -97,6 +97,43 @@
             "required": [
                 "suits"
             ]
+        },
+        "tweaks": {
+            "type": "object",
+            "description": "Allows arbitrary changes to the tweaks",
+            "propertyNames": {
+                "enum": [
+                    "TweakGui",
+                    "TweakTargeting",
+                    "TweakPlayerRes",
+                    "TweakPlayerControls2",
+                    "TweakParticle",
+                    "TweakGuiColors",
+                    "TweakGame",
+                    "TweakPlayer2",
+                    "TweakSlideShow",
+                    "TweakBall",
+                    "TweakAutoMapper",
+                    "TweakPlayerControls",
+                    "TweakPlayerGunMuli",
+                    "TweakPlayerGun",
+                    "TweakCameraBob",
+                    "TweakPlayer"
+                ]
+            },
+            "additionalProperties": {
+                "type": "object",
+                "description": "Mapping of full property path to new value. For nested properties, include parent property names split with .",
+                "additionalProperties": true
+            },
+            "examples": [
+                {
+                    "TweakPlayer": {
+                        "collision.ball_radius": 0.5,
+                        "dark_world.damage_per_second.di_damage": 1
+                    }
+                }
+            ]
         }
     },
     "required": [
diff --git a/src/open_prime_rando/echoes_patcher.py b/src/open_prime_rando/echoes_patcher.py
index c1a9eab..aed84af 100644
--- a/src/open_prime_rando/echoes_patcher.py
+++ b/src/open_prime_rando/echoes_patcher.py
@@ -1,5 +1,6 @@
 import json
 import logging
+import typing
 from collections.abc import Callable
 from pathlib import Path
 from typing import TYPE_CHECKING
@@ -124,6 +125,30 @@ def apply_corrupted_memory_card_change(editor: PatcherEditor):
     table.set_string(name_to_index["ChoiceDeleteCorruptedFile"], "Delete Incompatible File")
 
 
+def apply_tweak_edits(editor: PatcherEditor, tweak_edits: dict[str, dict[str, typing.Any]]) -> None:
+    """
+    Edits the tweaks based on the generic schema api
+    :param editor:
+    :param tweak_edits:
+    :return:
+    """
+    for instance in editor.tweaks.instances:
+        properties = instance.get_properties().to_json()
+        if properties["instance_name"] in tweak_edits:
+            logging.debug("Editing %s", properties["instance_name"])
+
+            for name, value in tweak_edits[properties["instance_name"]].items():
+                parent = properties
+                spit_name = name.split(".")
+
+                for part in spit_name[:-1]:
+                    parent = parent[part]
+
+                parent[spit_name[-1]] = value
+
+            instance.set_properties(instance.type.from_json(properties))
+
+
 def patch_paks(
     file_provider: FileProvider,
     output_path: Path,
@@ -155,6 +180,10 @@ def patch_paks(
     apply_small_randomizations(editor, configuration["small_randomizations"])
     apply_corrupted_memory_card_change(editor)
 
+    if "tweaks" in configuration:
+        status_update("Modifying tweaks", 0)
+        apply_tweak_edits(editor, configuration["tweaks"])
+
     status_update("Modifying areas", 0)
     apply_area_modifications(editor, configuration["worlds"], status_update)
 
diff --git a/src/open_prime_rando/patcher_editor.py b/src/open_prime_rando/patcher_editor.py
index 36b2146..090c01d 100644
--- a/src/open_prime_rando/patcher_editor.py
+++ b/src/open_prime_rando/patcher_editor.py
@@ -9,6 +9,7 @@
 from retro_data_structures.crc import crc32
 from retro_data_structures.formats.mlvl import Mlvl
 from retro_data_structures.formats.mrea import Area
+from retro_data_structures.formats.ntwk import Ntwk
 from retro_data_structures.formats.strg import Strg
 from retro_data_structures.game_check import Game
 
@@ -31,6 +32,8 @@ def _seek_and_write(self, seek: int, data: bytes):
 
 class PatcherEditor(AssetManager):
     memory_files: dict[NameOrAssetId, BaseResource]
+    dol: MemoryDol | None = None
+    tweaks: Ntwk | None = None
 
     def __init__(self, provider: FileProvider, game: Game):
         super().__init__(provider, game)
@@ -38,8 +41,9 @@ def __init__(self, provider: FileProvider, game: Game):
 
         if game in [Game.PRIME, Game.ECHOES]:
             self.dol = MemoryDol(provider.get_dol())
-        else:
-            self.dol = None
+        if game == Game.ECHOES:
+            with provider.open_binary("Standard.ntwk") as f:
+                self.tweaks = Ntwk.parse(f.read(), game)
 
     def get_file(self, path: NameOrAssetId, type_hint: type[T] = BaseResource) -> T:
         if path not in self.memory_files:
@@ -79,6 +83,9 @@ def save_modifications(self, output_path: Path):
             target_dol.parent.mkdir(exist_ok=True, parents=True)
             target_dol.write_bytes(self.dol.dol_file.getvalue())
 
+        if self.tweaks is not None:
+            output_path.joinpath("files/Standard.ntwk").write_bytes(self.tweaks.build())
+
     def add_or_replace_custom_asset(self, name: str, new_data: Resource) -> AssetId:
         if self.does_asset_exists(name):
             asset_id = self.replace_asset(name, new_data)
diff --git a/tests/echoes/test_full_patch.py b/tests/echoes/test_full_patch.py
index 21eeccf..bc5f0b2 100644
--- a/tests/echoes/test_full_patch.py
+++ b/tests/echoes/test_full_patch.py
@@ -92,4 +92,4 @@ def test_pal_paks(pal_prime2_iso_provider, tmp_path, test_files_dir):
         output_path=output_path,
         configuration=configuration,
     )
-    assert len(list(output_path.rglob("*.pak"))) == 11
+    assert len(list(output_path.rglob("*.pak"))) == 10
diff --git a/tests/test_files/echoes/door_lock.json b/tests/test_files/echoes/door_lock.json
index a922d89..774c5c5 100644
--- a/tests/test_files/echoes/door_lock.json
+++ b/tests/test_files/echoes/door_lock.json
@@ -3326,5 +3326,10 @@
             "dark": "player2",
             "light": "player3"
         }
+    },
+    "tweaks": {
+        "TweakPlayer": {
+            "dark_world.damage_per_second.di_damage": 1
+        }
     }
 }
\ No newline at end of file