diff --git a/TODO b/TODO
index a48d540..866b9ad 100644
--- a/TODO
+++ b/TODO
@@ -1,43 +1,81 @@
-Pixel art to do (by priority):
-  - More varied attacks: circular slash? dash attack?
-  - Environment damage
-  - Particles after monsters' deaths? Slime puddles, dark enemy outlines, ...
-  - Enemies planned (skeletons; more tifuciles; a final boss for Crypt GLOOM?)
+Pixel art to do
+===============
 
-Unused enemies:
-   water_slime
-   chemical_slime
-   crimson_bat
-   gunslinger/Reloading
-   gb_gunslinger
-   master_gunslinger
-   tifucile
-   washing_machine
-Unused items:
-   chest
-Unused skills:
-   launch
-   magic
-Unused animations:
-  items/upgrade
+- More varied attacks:
+  * Sharp shadow attack (see skill icon for inspiration)
+  * Circular slash? (We already have shock)
+  * AOE-style bomb/meteor/etc?
+- Enemies:
+  * A new jumping attack for slimes for variety in Wrecked Lab (Arcuz)
+  * Or maybe a flying slime?
+  * Skeletons
+  * More tifuciles (including mamafucile)
+  * Crypt boss (Dracula / Skeleton archmagus / etc)
+- Environment damage
+- Particles after monsters' deaths? Slime puddles, dark enemy outlines, ...
 
-* Have camera move (eg. in the direction of movement)
+Programming to do
+=================
+
+Core mechanics:
+* Compute a score at the end of each level
+  - Only increases, so we can show its real-time value
+  - Based on: combo chains, simult-kills, one-shot kills, waves survived
+* Have a deterministic mode for grinding
+* Use for items in battle (potions mainly)
+* Infinite mode for every level
+* Map events, including removable tombstones in Crypt GLOOM
+* Elaborate AIs that force the player to move and adapt, not just mash
+* Tutorial
+* Bindings for higher score:
+  - Faster waves
+  - No skills
+  - Reduced weapon damage
+
+Content:
+* Additional skills
+
+Extra details
+=============
+
+* Have camera move? (eg. in the direction of movement)
 * More explosions
 * Cool-looking shaders?
 * Leaves particles on monsters' death
 * Leaves environment damage after spells and explosions
-* Thorned dash
-
-* Mini cutscenes?
-
 * Bonemeal easter egg (grow plants wherever skeletons die)
 * Also the other easter egg
 
-* More variety in the moveset: circular attack, dash attack
-* Elaborate AIs that force the player to move and adapt, not just mash
-* Buffed gunslingers with bullet hell vibes
-* Arcade gameplay: add score and marks based on health lost, time spent, etc
-  - Make loot drops and spawn locations deterministic
-  - Large graphics for combos etc
+Reference data
+==============
 
-* Tutorial?!
+Level gimmicks:
+1. [Mossy Dungeon]: No gimmick, this is the tutorial/baseline
+2. [Wrecked lab]: All sorts of slimes
+3. [X's Garden]: Tifuciles and the tifucile boss
+4. [Mecha Airship]: Gunslinger-loaded bullet hell
+5. [Crypt GLOOM]: Map clears when enemies resurrect + final boss
+
+Unused resources:
+- Enemies:
+  * water_slime
+  * chemical_slime
+  * crimson_bat
+  * gb_gunslinger
+  * master_gunslinger
+  * tifucile
+  * washing_machine
+- Items:
+  * chest
+Skills:
+  * launch
+  * magic
+Animations:
+  * items/upgrade
+
+Enemies for each level:
+1. [Mossy Dungeon]: Introduce basic enemies
+2. [Wrecked Lab]: All slimes + some bats
+3. [X's Garden]: Tifuciles + Normal and chemical slimes
+4. [Mecha Airship]: All gunslingers + Fire slimes
+5. [Crypt GLOOM]: Skeletons + Bats + Water slimes