Change the first paragraph of rule 2.7 from

A Monster is a type of game entity; each one has a number of HP and an amount of Damage, which is two integers (a number of Dice and a number of Sides). A monster also has a number of XP. A Monster’s XP is always equal to that Monster’s initial HP, times that Monster’s Dice, times that Monster’s Sides, divided by three and rounded down, or 1 if the result is less than 1.

to

A Monster is a type of game entity; each one has an internal ID, a name, a number of HP, an amount of Damage, which is two integers (a number of Dice and a number of Sides), a speed, intelligence, as defined by rule 2.4 for that specific internal ID. A monster also has a number of XP. A Monster’s XP is always equal to that Monster’s initial HP, times that Monster’s Dice, times that Monster’s Sides, divided by three and rounded down, or 1 if the result is less than 1.

Change the paragraph

An encounter starts out Ranged. A Ranged encounter becomes a Melee encounter when it has been continuously on the same floor as an @ for at least 24 hours, and has continuously been a Ranged encounter for at least 24 hours. If there are ever no @s on a Floor, all Melee encounters on that floor become Ranged.

to

An encounter starts out Ranged. A Ranged encounter becomes a Melee encounter when it has been continuously on the same floor as an @ for at least X hours, and has continuously been a Ranged encounter for at least X hours. If there are ever no @s on a Floor, all Melee encounters on that floor become Ranged.

and add the following paragraph to the end of rule 2.7

A monster’s speed can be one of Sessile, Slow, Medium, Fast, Very Fast. If a monster’s speed is Sessile then Y is 48, if a monster is Slow then Y is 36, if a monster is Medium then Y is 24, If a monster is Fast Y is 12, and if a monster is Very Fast then Y is 6.

Also, change the term “Floor” to the term “Dungeon Level” throughout the ruleset.