In Ruins you should kill 21 Luxes and Toriel. You'll get LV 8 and 612 EXP. In Snowdin you need kill Snowdrake, Doggo and Dogi (Dogamy and Dogaressa). Don't encounter Lesser Dog, sparing him you'll interrupt a Genocide Route and kill 15 Glydes . After this, kill Greater Dog and Papyrus. Total: LV 12 and 2504 EXP.

In Waterfall, you should kill 9 (Aaron + Woshua), when will remain 2 monster, do encounter Aaron or Woshua and will remain 1, you can encounter Aaron + Woshua and kill them. After killing Undyne you'll get LV 14 and 5656 EXP. In Hotland come acrossing weak monsters (Vulkin, ) just flee from them. Go to Core and use lift to bridge and do encounter Knight Knight only and kill 37 such. Total is LV 17 and 15952 EXP. This is tool assisted speedrun.

More info: Playlist of Undertale, you can see more: ?list=-:00 - Start0:08 - Toriel1:27 - Papyrus5:45 - Mad Dummy7:59 - Undyne10:26 - Muffet13:51 - Mettaton EX16:00 - Asgore20:10 - Omega Flowey27:56 - Asriel :10 - Undyne the Undying39:26 - Mettaton Neo39:36 - Sans44:44 - Credits47:23 - The is video game created by American indie developer Toby Fox in 2015. It is an RPG with bullet hell and avoidance elements and has a heavy focus on choices and their . All footage and music used belong to their owners. ★Follow my Twitter★: ★Follow my Facebook★: ★Follow my Discord★: Thanks for watching!. .