This chapter features a complete walkthrough for the mission The Iga Escape. Here you will find solution to the challenges of the main plot. It will help you in completing this mission in best way possible. The mission ends with a boss fight - Giant Toad.
Specific details are described in separate sections.
First part of the building and the garden
Once the mission starts, you will notice a shrine on the left. Enter the building. The walls shown on the above picture can be destroyed in order to reveal other rooms. Inside you will face ninjas. Try provoking them with ranged weapon so that you will face them one after another. You should have antidote ready as they are throwing poisoned shurikens at you.
Go towards the stairs once you eliminate all enemies on the lower floor. You will enter a different room. Speak with the standing ninja. The hidden door can be recognized by the marks of being moved. Walk towards the door and press the interaction button. You will enter a new room with a chest and a ladder. Destroy all items and you will find Kodama. Once you get up, don't walk towards the balconies but remain in the room. Defeat ninja. Behind the wall you will find a chest and by going down the ladder you will unlock a shortcut.
Once you get to the balcony, you will notice amrita fiend. Watch out for the trap shown on the above picture while you're walking towards it. You can fight the enemy or provoke it to stand on the trap - this will enable you to bypass him. The power of the crystal regenerates his health. Keep walking across the corridor until you reach its end. Then go downstairs. Near the corpse you must watch out for the ninja that will fall from above.
Open another rotary door after defeating him. There are three rotating doors on this level. The first and the second ones lead to the same room with a crystal. The third one is currently closed. Destroy the crystal. Hit the banner on the wall in order to leave this room. Then walk down. Next to the well you will find Kodama and you will unlock a shortcut to the shrine.
Defeat all enemies and then search the whole level. You will find some treasures and Kodama hidden under the fence. Enter the wooden construction and go towards the bridge. Watch out for the ninja - you can fall down. Activate the shrine after passing through the bridge. From the bridge you can jump to the ground. Defeat the warrior with cannon. Behind the tree you will find Kodama. Jump down, defeat Yoki and destroy the crystal. In the chests you will find Kodama. Go back to the shrine.
Second part of the building
Then go upstairs and open the door. Jump down while avoiding the spikes. Get into the next room, defeat Yoki and jump down through the hole. You should be careful and land on the beam. You will enter a corridor in which you must face two ninjas and spiders. Once the enemies are defeated, go through the beam towards the door. You must destroy the screen in order to unlock the passage and make the house turn around. Walk through the door and jump down. Now you must face Yoki that will appear from the fog. In the next room you must defeat spiders and move forward. Watch out so that you don't enter the middle of the room - otherwise you will activate a trap.
Walk through the corridor - you can unlock a shortcut to the shrine. Behind the wall you will face a Yoki. If you pass through the rotating wall, you will enter a room with ninja. After the fight you must destroy Nurikabe. You will unlock a passage to the room with hot spring and Kodama. Next to that room there is another rotating wall - behind it there is another Kodama.
Keep going forward. In the next corridor you should watch out for the pressure plate that activates trap. In the room next to it there is a crystal you must destroy. Nearby there are rotating door, behind them you will find a treasure chest. Then keep going forward. Behind the door you will face the Giant Toad boss.