Gate (first view)

tower view (1 left)

hay view (2 left):
- take hook (hanging on left side)
- take shovel (in hay)

oven view (3 left)
- take cauldron
- take chain (hanging on right side)

ram view (4 left)
- take stick ( on left)
- combine chain with ram
- use ram to open door

footsteps view (5 left)
- take axe

wagon (6 left)
- take mug from floor (right)

wall puzzle view (7 left)

gate (8 left/start view)
- use axe on rope
- use rope and hook

Tower view (1 left):
- use rope with hook on tower
- climb tower

Tower top:
- take torch
- take gear

Well view (on any view inside walls just go down/behind):
- use gear on well
- take stone out of bucket

Go in door at ram view:
- use torch
- use mug on barrel (Slainte!)

Footsteps view:
- use cauldron and stick, then combine both with filled mug
- place flawless leprechaun catching device on floor
- you receive another stone in inventory

Stone puzzle view:
- use stones in wall
- solve riddle (only click leprechaun related stones, solution later)

Footsteps view:
- take clover

go outside of gate view:
- place clover
- use shovel on end of rainbow

spoiler

stone puzzle:
click: rainbow, hat, clover, shoe, mug and the weird thing left bottom below horseshoe.

Walkthrough from escapegames24