diff --git a/arena.lua b/arena.lua
index 18beaa5..154cf71 100644
--- a/arena.lua
+++ b/arena.lua
@@ -333,6 +333,7 @@ function Arena:update(dt)
             }
             max_units = 7 + new_game_plus
             main:add(BuyScreen'buy_screen')
+            system.save_run(0, gold, {}, passives, run_passive_pool_by_tiers)
             main:go_to('buy_screen', 0, {}, passives)
           end, text = Text({{text = '[wavy, bg]restarting...', font = pixul_font, alignment = 'center'}}, global_text_tags)}
         end}
@@ -430,6 +431,7 @@ function Arena:update(dt)
         }
         max_units = 7 + new_game_plus
         main:add(BuyScreen'buy_screen')
+        system.save_run(0, gold, {}, passives, run_passive_pool_by_tiers)
         main:go_to('buy_screen', 0, {}, passives)
       end, text = Text({{text = '[wavy, bg]restarting...', font = pixul_font, alignment = 'center'}}, global_text_tags)}
     end
@@ -525,6 +527,7 @@ function Arena:quit()
               }
               max_units = 7 + new_game_plus
               main:add(BuyScreen'buy_screen')
+              system.save_run(0, gold, {}, passives, run_passive_pool_by_tiers)
               main:go_to('buy_screen', 0, {}, passives)
             end, text = Text({{text = '[wavy, bg]restarting...', font = pixul_font, alignment = 'center'}}, global_text_tags)}
           end}
@@ -801,6 +804,7 @@ function Arena:die()
           }
           max_units = 7 + new_game_plus
           main:add(BuyScreen'buy_screen')
+          system.save_run(0, gold, {}, passives, run_passive_pool_by_tiers)
           main:go_to('buy_screen', 0, {}, passives)
         end, text = Text({{text = '[wavy, bg]restarting...', font = pixul_font, alignment = 'center'}}, global_text_tags)}
       end}
@@ -876,6 +880,7 @@ function Arena:transition()
   TransitionEffect{group = main.transitions, x = self.player.x, y = self.player.y, color = self.color, transition_action = function(t)
     slow_amount = 1
     main:add(BuyScreen'buy_screen')
+    system.save_run(self.level, gold, self.units, passives, run_passive_pool_by_tiers)
     main:go_to('buy_screen', self.level, self.units, passives)
     t.t:after(0.1, function()
       t.text:set_text({
diff --git a/buy_screen.lua b/buy_screen.lua
index 94fcc3f..d6b89bc 100644
--- a/buy_screen.lua
+++ b/buy_screen.lua
@@ -451,6 +451,7 @@ function RestartButton:update(dt)
       max_units = 7 + new_game_plus
       system.save_state()
       main:add(BuyScreen'buy_screen')
+      system.save_run(0, gold, {}, passives, run_passive_pool_by_tiers)
       main:go_to('buy_screen', 0, {}, passives)
     end, text = Text({{text = '[wavy, bg]restarting...', font = pixul_font, alignment = 'center'}}, global_text_tags)}
   end
diff --git a/engine/datastructures/table.lua b/engine/datastructures/table.lua
index 825039f..8b4c624 100644
--- a/engine/datastructures/table.lua
+++ b/engine/datastructures/table.lua
@@ -397,6 +397,8 @@ function table.tostring(t)
     end
     if str ~= "{" then return str:sub(1, -3) .. "}"
     else return str .. "}" end
+  elseif type(t) == "string" then
+    return '"' .. tostring(t) .. '"'
   else return tostring(t) end
 end
 
diff --git a/engine/system.lua b/engine/system.lua
index 668a0ac..9f59e64 100644
--- a/engine/system.lua
+++ b/engine/system.lua
@@ -137,6 +137,20 @@ function system.load_state()
 end
 
 
+function system.save_run(level, gold, units, passives, run_passive_pool_by_tiers)
+  local run = {level = level, gold = gold, units = units, passives = passives, run_passive_pool_by_tiers = run_passive_pool_by_tiers}
+  local str = "return " .. table.tostring(run)
+  love.filesystem.write("run.txt", str)
+end
+
+
+function system.load_run()
+  local chunk = love.filesystem.load("run.txt")
+  if chunk then return chunk()
+  else return {} end
+end
+
+
 function system.get_main_directory()
   return love.filesystem.getSource()
 end
diff --git a/main.lua b/main.lua
index 3d96469..2750bc3 100644
--- a/main.lua
+++ b/main.lua
@@ -1157,15 +1157,16 @@ function init()
     [25] = {'speed_booster', 'exploder', 'headbutter', 'tank', 'shooter', 'spawner'},
   }
 
-  run_passive_pool_by_tiers = {
+  local run = system.load_run()
+  run_passive_pool_by_tiers = run.passive_pool_by_tiers or {
     [1] = { 'wall_echo', 'wall_rider', 'centipede', 'temporal_chains', 'amplify', 'amplify_x', 'ballista', 'ballista_x', 'blunt_arrow', 'berserking', 'unwavering_stance', 'assassination', 'unleash', 'blessing',
       'hex_master', 'force_push', 'spawning_pool'}, 
     [2] = {'ouroboros_technique_r', 'ouroboros_technique_l', 'intimidation', 'vulnerability', 'resonance', 'point_blank', 'longshot', 'explosive_arrow', 'chronomancy', 'awakening', 'ultimatum', 'echo_barrage', 
       'reinforce', 'payback', 'whispers_of_doom', 'heavy_impact', 'immolation', 'call_of_the_void'},
     [3] = {'divine_machine_arrow', 'divine_punishment', 'flying_daggers', 'crucio', 'hive', 'void_rift'},
   }
-  gold = 2
-  passives = {}
+  gold = run.gold or 2
+  passives = run.passives or {}
   steam.userStats.requestCurrentStats()
   new_game_plus = state.new_game_plus or 0
   if not state.new_game_plus then state.new_game_plus = new_game_plus end
@@ -1173,10 +1174,12 @@ function init()
 
   main = Main()
 
-  -- main_song_instance = _G[random:table{'song1', 'song2', 'song3', 'song4', 'song5'}]:play{volume = 0.5}
+  if run.level ~= 0 then
+    main_song_instance = _G[random:table{'song1', 'song2', 'song3', 'song4', 'song5'}]:play{volume = 0.5}
+  end
 
   main:add(BuyScreen'buy_screen')
-  main:go_to('buy_screen', 0, {}, passives)
+  main:go_to('buy_screen', run.level or 0, run.units or {}, passives)
   
   --[[
   main:add(Arena'arena')
diff --git a/todo b/todo
index cb1dc94..09d8351 100644
--- a/todo
+++ b/todo
@@ -1,15 +1,11 @@
-* Lich buff -> increased projectile speed
-* Highlander buff -> increased area size
-* Change Cannoneer's Lv.3 to 7 repeats, and each repeat should be slightly slower *
-* Wizard chains 3 times
-* Saboteur area fix
-* NG+ snake size fix
-* Change Divine Machine Arrow to pierce 4 times
-* Rogue buff -> chance to crit 15/30
-* Psyker buff -> 10% bonus
-* Concentrated Fire change to "chance to create secondary AoEs on AoE hit" (like Cannoneer's Lv.3)
-* Decreased difficulty slightly for NG+ levels
-* Remove repeat passives
-* restart button on end game
-* fixed interest above 5
-* fixed fast passive buy bug
+Curser buff - change all cursers to trigger like the infestor does and for the effects to be on-death effects 
+Forcer buff - change all forcers to have a bigger area or to trigger their effects via projectiles (like the hunter)
+Conjurer buff - buff saboteur, buff engineer
+Vagrant buff - increase "active set" bonuses
+Save runs
+Move units
+Endless mode
+Lock shop button
+Harder difficulty on NG+0
+Lower difficulty on NG+4/5
+Increase boss HP on levels 24 and 25