D.Machin Grind Giant Manip
Setup
Enable encounters and save at the save point.
Reset.
Follow the path in the image. When you get an encounter, pay attention to which tile it was on, and find that tile on the image below.
If you haven't gotten an encounter by the last tile in the first room, take the teleporter to the next room.
If you don't get an encounter in the 3 steps in that room, take the teleporter back to the save room. At that point, you have taken 20 steps. Start counting steps from 21 and refer to the table on the right side of the image. Keep in mind that walking on the stairs does not count towards the step count.
If that tile shows a red X, reset and start following the path again.
If that tile shows a green circle, you've already found the right encounter.
A number on a tile shows the number of encounters it takes to get the grind fight (including this one. So if it says 4, then run from this encounter and the next two, and the 4th will be the correct fight).
If there's a + after the number, the grind fight will be found in the next room (the Elements room). Any extra encounters you have to go through beforehand can be taken in either room, but you'll have to be in the Elements room to get the actual grind fight.
If that tile shows two numbers, then there are two possibilities. If the first possibility does not give you the correct fight, then the second one will.
Note that some tiles with two possibilities may give the Searcher/Beamer/Horseman fight, which looks identical to the Searcher/Beamer/D.Machin fight. These numbers are marked with a question mark. See below for more details.
Ambiguous Tiles
Step 2
The second encounter has a 7/9 chance of giving the D.Machin grind fight, and a 2/9 chance of giving the Horseman fight.
The fourth encounter will always be the D.Machin grind fight.
Step 15
(the one just before the last green circle in the first room)
The second encounter has a 1/3 chance of giving the D.Machin grind fight, and a 2/3 chance of giving the Horseman fight.
The fourth encounter will always be the D.Machin grind fight.
Step 21
(the first step taken after re-entering the first room)
The second encounter has a 1/3 chance of giving the D.Machin grind fight, and a 2/3 chance of giving the Horseman fight.1)
The fourth encounter will always be the D.Machin grind fight.