I am going to be explaining the route and the logic behind the decisions I made when routing Castlevania: Lament of Innocence Pumpkin 100%. This will not be fully comprehensive but will cover the directions through the rooms without telling about the enemies involved; however the exact direction I give may not be useful unless you already understand where things are in the game or have a map handy (I use the ones on tartarus.rpgclassics.com/cv%3aloi for reference, also I will reference any% runs/routing as this will be true and concise.

Starting we want to go through the "tutorial" area backwards grabbing the Sarvog Statue then continuing picking up the Magical Ticket, Uncurse Potion, Serum, and Potion. Those are used for item duping before Saving in the Castle Entrance. You will want to end all of the shopping with at least 1 Magical Ticket, Memorial Ticket, Diamond, Ruby, Saphire (Turquise don't matter as pumpkin cannot change sub-weapons). You will want to Item dupe what you have.

The first area that will be entered is the Dark Palace of Waterfall (I chose this area as there is a ton of momevent done and speeding up all the movement is a high priority). Note: this area cannot be finished yet as we don't have the flame whip nor the black key. first head to the next room and take the right path at the next divide take the left path, hit the bridge lever, backtrack to the square room and enter the new door, take the hall to the fleeman room and go back towards the entrance for map completion (done now as it will be very out of the way later), backtrack to the divided hall, get the save room on the right then proceed to the left towards the basement. In the basement take the left path and go straight to the Waterflow lever, after hitting the waterflow lever use a Memorial Ticket to go back to the start of the area. Re-enter the Dark Palace of Waterfall and go on the left path, at the next divide take the right path. You then want to go the way opposite Joachim to clear this section of the map and pick up the Heart Repair (you most likely will run out of hearts and having heart repair early helps avoid slowing down due to that). backtrack to the save room before Joachim, and then proceed to fight Joachim for the Green Orb. Once you have the green orb warp back to the castle entrance. (you can item dupe here if you want potions and/or more heart repair)

The next area is the Garden Forgotten by Time. (This will give us Jewel Crush to use for many things). Start the area by ignoring the first door (this leads to a locked door that we need to come back later for). Use Rampage Pumpkin for most of all movement going forward. enter the door on the side of the path to hit door 1 switch 1. back out and continue on the path. take the door before the divide to get to door 1 switch 2. backtrack to the divided path. (the way you go here does not actually matter as we will be traveling this section again and can finish the path not taken at that point.) pass by Map 4 to get back on the required path. at the next divide take the turn (we again are missing the key item "blue key" to finish the bottom path and will be coming back to the area later to deal with that). in the square area choose which way you want to go (there probably is a better way, this is due to being able to skip the last fight in the square section). proceed to the save room after that section and SAVE the game. (we will want to warp back here after we possess a "required" relic). finish up the rest of the square area that you do not have and warp back to the save room. in the next room use the plant to reach the door and hit door 2 switch 1 and obtain Jewel Crush. leave that room and on the next divided path go towards the last door 1 switch. backtrack to the split path and start heading towards thunder elemental. on the way hit the 2nd door 2 switch. (it is likely faster to use a memorial ticket after beating thunder elemental but it might be faster to walk back this would need to be timed for the optimal scenario). Head towards Medusa, but only until you hit the last door 2 switch. once the last door 2 switch is hit backtrack to get the Red Key and finish up the area in the "gardens" Proceed the rest of the way to Medusa finishing up this section of the map. Once Medusa is defeated either use the Warp on the Ground or the Memorial Ticket to get back to Rinaldo's Shop.

Make Sure you DO NOT SAVE Proceed with item duping if you wish before going into the Anti-Soul Mysteries Lab (We want to get the Wolf's Foot so we can move our save point, the other option we have is to do the Ghostly Theatre, but that will be faster with the Black Bishop and Flame Whip. Also we will need to re-enter this area anyway, but it would add an extra re-entry for Ghostly Theatre.) Firstly, we want to go the way opposite how any% goes. (this is for backtrack re-entry reasons) once you get to the divide go to the side door (technically you could grab the save room now if you wished) proceed until you get to the hall with 4 rooms off of it. you will want to enter all 3 of the ones closest to you and end going up to the 2nd floor (you could get the last room now, but it is better to put it off until later due to needing to re-enter the area and you can prevent having to do the fight). Once on the 2nd floor you want to head straight towards the camera getting to the wolf's foot. with that now in your possession you want to backtrack towards the save room and finish the 4 rooms on this floor. proceed to fight the Flame Elemental and get the Whip of Flames (I have been and will continue to call this the Flame Whip) It may be best to exit and re-enter the door going back to reset the platform cycle, you will need to get on it for the other room in this area, alternatively you could reverse the order of that room and the flame elemental. after that proceed up to the room before the 3rd floor to grab the Yellow Key. and with it head to the 3rd floor. at the start go the opposite direction from the "e"-tablet. you will need the wolf's foot to cross the crubbling bridge to the Megingjord room (pick it up if you want, but I don't see much use for it.) after go the the last of the 4 room hallways and clear out the entire section (the direction you take to do it matters very little you just need to make sure the map of this floor is completed and you have the "e"-tablet) before heading back down to the 2nd floor to fight golem (remember to grab the save room on the way)

after getting the red orb use a Memorial Ticket to head back into the Garden Forgotten by Time. all we need to do in this area is finish up the area heading towards the Thunder Elemental room where we will be able to get the Saisei Incense (again if you want it, you don't have to actually grab the relic.) aftwards warp back to Rinaldo's Shop with a Magical Ticket.

Since we just got the Yellow Key it seems like a good time to head into the House of Sacred Remains. (This will also prevent us from needing to save in the Castle Entrance for now.) Take the any% path hitting the first switch for door 1, but you will need to save in the first save room. proceed along either long side path to one of the door 2 switches (which you do first doesn't matter much) then do the other path after using a Memorial Ticket from the switch room. clean up the rest of the area with the branching paths heading towards the next door 1 switch. press the next door 1 switch and proceed like the any% route does. you can save in the save room if you want, but I believe it is likely faster to run back during this next section: you will want to go to get the Black Bishop and hit the final door 1 switch, you then can run back to the now open door or use a memorial ticket if you saved on the long hall save room. either way you will now head through the unlocked door 1. in the next room you will take the side door and press the final switch to unlock door 2. run back towards the basement as this is where you will go next in the basement take the right door to get past the now unlocked door 2 and obtain the White Key. Backtrack and head to fight the Undead Parasite (There is less backtracking from this room as opposed to bloody cape room, so I thought this would be better.) After getting the Blue Orb head to the statues. use Goat, Girl, Goat, Girl, Girl to get the first room with an HP max up (if you want it) then use Girl, Goat, Goat, Girl, Goat to head towards the room with the Bloody Cape. (There is some chance I have these patterns reversed., the important part is entering the HP up Room first) after having finished the map of the House of Sacred Remains use a Magical Ticket to Return to Rinaldo's Shop.

Save in the Castle Entrance before going into the next area. The next area being done is the Ghostly Theatre (We can complete it now without re-entering.) at the first divide turn opposite the way any% does, and get the first room then immediantly turn around and go the other way. make sure you grab the save room and the room in the falling spike room proceeding on the any% route. there are some extra hallways and rooms that you need to grab and get the Heart Brooch before going up to the 2nd floor. (the heart brooch in theory is helpful as it does lessen the amount of hearts you need to use sub-weapons, but you could skip it if you wanted to) (I don't know the exact best path for the end of the ghostly theatre, 2nd half, but I will try and give a decent one.) the 2nd floor has a few extra rooms but is very similar to any%, these are the lucifer's sword room in the falling spike room and the brinsamen room in the dark room. fall down to the first floor and do the succubus fight to get the yellow orb. (this should be all the main orbs. i.e. not white and black) leave the boss room and proceed down the hall to the next room. enter the hall going back towards the entrance, but imediantly backtrack to the new room. you will probably want to grab the Aroma Earring out of its room before leaving and continuing forward. Use all the blue statues to open Door A, and then use the Red statues to proceed to the next area. you will want to finish up all the halls and rooms on this floor before proceeding to the 2nd floor. on the 2nd floor make sure you get the save room and the black key. (there is a mana prism in the room before the black key that may or may not be useful) after completing the map of the Ghostly Theatre use a Memorial Ticket.

Now we need to finish up the Dark Palace of Waterfalls before we can finish the other areas. So that is where we head next. Take the first Left Path and then the next Left path to head towards frost elemental. defeat frost elemental and get on the the skull chute ride to enter the basement. in the basement use the black key to get into the drapnir room and backtrack to get the HP up on the opposite side of the waterflow lever. backtrack and go all the way down the long hallway. turn the opposite way as doppleganger, and proceed towards the Little Hammer (requires the Flame Whip) backtrack towards doppleganger and get the save room before doing the fight. after the fight go until getting the Blue Key and then use a Memorial Ticket.

(These 2 things can be done in either order) 1: Enter the Garden forgotten by Time and get the Ring of Fire room that was locked earlier, backtrack and stay on the path until it branches, you need to do the path that you did not do earlier now, then at the next path stay going straight to use the Blue Key and obtain the Tool Bag. use a Memorial Ticket to get back 2: Enter the Anti-Souls Mysteries Lab. If you didn't grab the 1st floor center save room earlier do it now, get the white orb (requires both Flame Whip and Ice Whip in that order.) leave that room and get the last of the 1st floor 4 rooms that was skipped earlier. Use a Memorial Ticket (and then you don't have to fight in that room)

I will not go much in depth of how to get through the Pagoda of the Misty Moon, but I will give a bit of an overview. Finish the first floor at the start it isn't worth going back for later. the First thing you want to do on the 2nd floor is save the game. when getting the VI tablet and dragon Crest take opposite paths to mitigate backtracking. make sure to complete the circle on the Unlock Jewel Side once getting it and use a Magical Ticket to get back to Rindaldo's Shop.

The last few things in the game are the Prison of Eternal Torture Area (don't forget it has a save room), fighting the Forgotten One, Walter, and Death.