Thread:Nikoruzoi/@comment-27373703-20161220043512/@comment-27701762-20161220052251

The Genocide Route is pretty easy to complete, with the exception of its two bosses. The only issue (again, aside from the two bosses) is that it is tedious.

The goal you need to achieve is to kill every monster in each area: the Ruins, Snowdin, Waterfall, and Hotland/the Core (these two are treated as one area). You have to fulfill this criteria before encountering the boss of that area (Toriel, Papyrus, Undyne, Mettaton NEO).

You can technically kill the exact number of monsters you need and then move to the boss, but it's better to play it safe by killing enemies until you get an encounter which says "But nobody came." At which point the music will become heavily distorted, and it is safe to move on to the boss (you will get a lot of encounters at this point, so you'll have to keep mashing through them).

The tedious part comes from the fact that as you kill more monsters, the time between encounters gets longer and longer. The best way to counter this issue is the following:

Step 1) Find a room that has encounters (it can be the first room where you get an encounter in each area).

Step 2) Hold Up+Down on the keyboard. This will get you encounters just a tiny bit faster than normally walking around.

Step 3) After getting an encounter, leave the room and return.

Step 4) Repeat Steps 2 and 3.

Step 5) Once you get an encounter that says "But nobody came," move on to the boss.

Repeat for each of the four areas. It may be better in Hotland to continue on until you get to the Core, and then grind kills there.

Beyond that, the only major issue is going to be the boss battles.