Sulphur Eye walkthrough - by O'Dog/LXT

written down from author's video:
https://youtu.be/watch?v=tg8yCk8sVZw
and a bit optimized.

Make sure to learn about the keyboard
controls before playing this game!

Touching something in most cases means
shooting at it. Game was made using
3D Construction Kit which was supposed
to create shooters with it. ;-)

Let's go...

Turn left
Enter door (box hanging from above)
Walk straight through room, enter door
Walk striaght through room, enter door
Walk straight through room, enter door
Turn left to yellow rope
Walk towards wall behind rope
Hit yellow rectangle to use elevator
Walk through door
Walk forward through room
Look down, pick up TNT from floor
Turn around, walk through right door
Walk to yellow rope to use elevator
Turn right, exit room through door
Walk straight through room, enter door
Walk straight through room, enter door
Hit light red square at right wall
(Places TNT)
Turn right, enter door
Walk up stairs (carefully, don't fall)
Turn right, exit room through door
Touch yellow panel at left wall (alarm)
Turn around, exit room through door
(Look down for safety. Don't fall off!)
Walk straight on path till end
Turn left, walk down stairs
Turn left, exit room through door
Exit through hole in right wall
Walk straight through room, enter door
(You have to duck with F key to pass) 
Enter door to the left
Look down, touch pad on floor
Walk around now standing pad
Look down, pick up ID card from floor
Exit room through door
Turn right, exit through door
Walk straight through room, enter hole
Turn left, exit through door
Walk straight through room, enter door
Walk straight through room, enter door
Turn left to yellow rope
Walk towards wall behind rope
Hit yellow rectangle to use elevator
Walk through door
Turn right, exit through next door
Touch light red square on left wall
(Turns yellow, unlocks door with ID)
Turn around, exit through door
Turn left, exit through next door
Walk to yellow rope to use elevator
Turn right, exit room through door
Walk straight through room, enter door
Enter door at right wall (now unlocked)
Walk towards car hanging at crane
Touch yellow rectangle at pole
(Car falls down)
Walk to car, pick up battery
Turn around, exit through door
Walk towards left opposite corner
Look down, touch trapdoor (opens)
Enter trapdoor, walk through door
Enter door to the right
Walk to middle of right wall
Turn left (see barried gap)
Get down with F key, pass gap
Rise with R key, look down
Pick up fuse for generator
Turn around
Get down with F key, pass gap
Turn right, exit through door
Turn left, exit through door
Crouch up stairs (with F key first)
Turn left, exit through door
Exit through hole in right wall
Walk straight through room, enter door
(You have to duck with F key to pass) 
Walk straight through path, enter door
Turn right, cross bridge
Turn left, walk forward to green console
Touch blue panel (activates generator)
Turn around, walk back over bridge
Turn right, enter door
Walk straight through path, enter door
Walk straight through room, enter hole
Turn left, exit through door
Walk towards right opposite corner
Enter trapdoor, walk through door
Touch black square at left wall
(Removes barrier to outside)
Turn to door at green wall, enter door
Crouch up stairs (with F key first)
Walk around trapdoor, enter door behind
Walk straight through path, enter door
Walk to light red wall, turn right
Walk to barrier, touch barrier (gone)
Turn right, enter small room
Pick up canister on shelf, turn around
Exit through door, turn left
Walk towards wall, turn left
Walk straight through room, enter door
Walk straight through path, enter door
Turn left, exit through door
Walk straight through room, enter door
Turn right, exit through door
Walk to end of room, turn left
Touch yellow rectangle (turns green)
Turn left, exit through door
Turn left, exit through door
Walk straight through room, enter door
Enter door behind trapdoor
Walk straight through path, enter door
Walk to light red wall, turn right
Walk through open barrier, turn right
Walk forward to box with motorbike
Walk to back wall of box, turn around
Enter motorbike a bit from side
It is done...