The reservoir brings players through the mid levels of the tower.  The enemies continue to get harder including the giant floaters and spider kings.  The levels continue to become more intricate and longer, involving more work from Spangle.

21F – 23F 

1. Head to the left and pull the lever
   
2. Drop down to the right and pull the next lever
3. Kill the floater on your way to the left
4. Continue left until the slider shows up, then move it to the left
5. Jump to the platform and kill the floater
6. Drop into the hole and duck, then move the slider to the right
7. Jump up to the left and move the slider to the left to drop down
8. Run to the left and move the slider back toward the center, then jump up to the left
9. Hit the pyramid to activate the moving platform, ride it to the left
10.  Monitor Eye:  jump off the platform to the left
11. Climb the ladder and jump up the platforms, watch for the arrow shooter on the side of the first platform
12. Use spangle to rotate the pipes on the right
13. Walk forward to the pipe, rotate it, then walk forward and rotate it again
14. Rotate it once more to block the spike shooters below you, then drop down and head to the right (spiders will continually spawn in this corridor so be careful)
15. Rotate the pipes to the far right then jump up and enter the shadow Corridor
16.  Health Regen:  to the right
17. Drop down to the spiral and rotate left
18. Jump down to the second spiral wary of the spikes and rotate left again
19. Drop down and rotate right, then down and right again
20. Rotate the last spiral left and you’ll fall to the exit
21. Rotate the tubes to the right twice then jump across the platforms to the ladder
22. Head to the right, kill the fliers and flip the two levers
23.  Monitor Eye:  Continue right, then jump up onto the floating platform to the left and to the left again
24. Continue left and pull the lever
25. Drop down and pull only the left hand lever
26. Head back right, jump onto the floating platform, then onto the higher platform and finally over to the right to kill the spiders and vortex
27. Continue to the right, jump onto the pipes when they rotate and extend, wait in the middle, then jump to the next one
28.  Monitor Eye:  on the platform to the far right
29. Drop down and backtrack left to the lever area
30. Hit the reset lever on the right
31. Flip the two levers beneath the platform
32. Jump up onto the higher platform and hit the switch
33. Jump across the floating platforms to the left
34. Kill the spiders and vortex
35. Jump across the platforms to the left, avoid the buzz saw, then continue to the left
36. Keep going left, avoiding/killing the shooters, then break down the shadow wall
37. Climb the ladder to the exit

24F 

1. Jump across to the right and kill the spiders as you make your way up
   
2.  Monitor Eye:  Kill the swarms and collect it at the top of this area
3. Backtrack left
4. Head left across the rotating extending pipe and kill the shooters
5. Drop down and kill the ball thrower
6.  Memory:  drop down in hole under the second pipe
7.  Cross the pipe to the left and climb the ladder
8. Enter the shadow corridor
9. Head to the right and move the slider one tick left, then jump up the platforms
10. After going up three platforms move the slider to the right
11. Jump up two more then center the slider and continue up
12. Move the slider all the way to the left and jump up to the top and exit the corridor
13. Head left and kill the swarms, then continue left until the slider appears
14. Drag the slider down and drop
15. Attack the pyramid then move the slider up
16. Jump up the platforms, then drag the slider down once more
17.  Monitor Eye:  Head left and drag the slider to the top
18. Drag the slider back up and head all the way right
19. Continue across the gap to the right until you reach the ladder with two blue shooters
20. Stand at the foot of the ladder and drag the slider to the bottom
21. Climb the ladder once the blue shooters are dead and head to the right
22. Kill the shooters and spider king
23.  Monitor Eye:  between the two shooters
24. Break down the shadow wall to the right and climb the ladder to the exit

25F 

1. Head to the right and have Spangle move the pipes three times
   
2. Jump up onto the platform to the right, then rotate the pipes again before jump atop them
3. Head to the left and kill the floaters, then jump onto the platform
4. Drag the slider up
5. Jump to the right platform and move the slider down
6. Hop over to the left all the way to the wall, move the slider up
7. Flip the lever
8. Get out of there and drop back to the bottom
9. Head to the right onto the first pipe set you rotated and rotate the one to the upper right three times
10. Jump across and climb to the top of it
11.  Monitor Eye:  beneath the mechanism
12. Jump through the open door to the right and kill the two circle shooter vortexes
13. Drop through the floor trap and hit the lever to the right
14.  Memory:  Hit the sphere to the right to open the far door and run past the saw blades
15. Hit the sphere again to open the door and return the way you came
16. Head back to the left and jump back up and around to where you fell
17. This time jump onto the moving platform and ride it up
18. Climb the ladder to the right and jump off to the left
19.  Monitor Eye:  jump up onto the platforms above you
20. Jump to the left then continue along the pipes
21. Kill the fliers and spider on your way left
22. When you reach the spikes on the left jump up and kill the floater then jump to the left
23.  Monitor Eye:  continue all the way to the top left platform
24. Kill the flier and rotate the pipe mechanism to the right twice
25. Jump up onto the top and kill the floater
26. Continue right and wait at the saw
27. Move the pipes to the right once, then stand on the pipe closest to you and move it once more
28. Jump up and enter the shadow corridor
29. Head right and move the slider to the left
30. Drop down and duck, then move the slider right
31. Jump onto the platform on the right then move the slider left
32. Jump across and climb the ladder, then jump across the right
33. Move the slider right, then jump up onto the next platform and walk to the left
34. Move the slider three ticks to the left then jump up once more
35. Walk right to the exit
36. Head right avoiding the flames and jump across to the lever, flip it
37. Drop down then head to the right through the open door
38. Ride the moving platform up then jump to the right
39. Jump over the saw blades, kill the giant floater and continue to the right
40. Break down the wall then climb the ladder to exit

26F 

1. Head to the left and jump onto the moving platform
   
2. Ride the platform to the top and flip the lever
3. Drop back onto the platform and enter the door that opens on the left
4. Quickly hit the two spheres and run to the left across the floor trap and through the two open doorways
5. Continue left into the shadow corridor
6.  Health Regen:  to the right
7. Enter the spiral and rotate left
8. Head to the next spiral and have Spangle drop the wall on your left
9. Rotate to the right, then drop down 
10. Go all the way to the right and raise the wall on the far right side
11. Head back to the spiral and rotate right
12. Drop down and across to the right
13. Lower the wall on the right, and rotate right
14. Drop down to exit
15. Climb about half way up the ladder on the left, then rotate the pipes above you twice
16. Jump up onto them, avoid the arrow shooter and stand on the center
17. Move the pipes twice more, then jump across the long gap to the right
18. Go right and drop into the hole, move the slider to the right
19. Flip the lever
20. Move the slider to the left and jump up
21.  Monitor Eye:  climb the platforms to the top
22.  Monitor Eye:  Drop down and to the right, move the machine twice
23. Move the machine twice more
24. Go right onto the machine and jump up to the right
25. Jump between the saws and run all the way to the right wall
26. Rotate the pipes (above you) twice
27. Continue right and climb the ladder then jump back to the left
28. Drop down and hit the pyramid
29. Continue to the left through the door that opens
30. Hit the sphere and run to the left through the door that opens
31. Flip the lever and hit the sphere to exit
32. Jump up and catch the platform, then jump to the right and hit the lever you passed earlier
33. Jump onto the higher platforms and continue to the left past the flame spurts
34. Move the slider to the left and jump up onto the platform
35. Move the slider to the right and jump across the large gap to the left
36. Move the slider left then jump up along the platforms
37. Drag the slider to the right to bring the conveyor over
38. Jump onto the platform and duck, then drag the slider to the left
39. Head right and flip the lever
40. Continue to the right through the open door
41. Kill the two giant floaters and rollers that spawn
42.  Monitor Eye:  to the right through the open door
43. Head back to the left and drop down, then head right across the platforms you raised earlier
44. Break down the shadow wall and climb the ladder to the exit

27F – 29F 

1. Head to the right and kill the spider, then jump on the moving platform
   
2. Jump left and continue along the pipes
3. Head into the lower area and kill the spider and roller to hit the sphere
4. Backtrack to the right then jump to the upper level and through the newly opened door
5. Climb up the ladder to the next area and kill the shooters
6. Jump to the right onto the moving platform
7.  Monitor Eye:  Jump off the moving platform to the left
8. Get back on the platform and jump to the left onto the ladder
9. Climb the ladder then jump to the right
10. Continue to the right and ignore the sphere, kill the two giant fliers
11. Backtrack and fall beneath the second moveable pipe, flip the lever
12. Head back to the sphere and hit it, then go all the way right through the open door
13. Jump up and flip the lever
14. Drop down through the next area to the bottom avoiding the arrow shooters
15. Kill the spider on the right and enter the corridor
16.  Health Regen:  to the right
17. Use the spiral to rotate right, jump up and rotate left
18. Jump up again then rotate left, flip the lever
19. Rotate back to the right
20. Jump up onto the extended platform and make your way to the right past the flames
21. Rotate left when the flame is off
22. Run up to the last spiral and rotate left when the flames are down
23. Flip the lever to the right then head back to the spiral
24. Head left and climb the ladder then exit the corridor
25. Go right and flip the lever
26.  Monitor Eye:  Jump up to the higher platforms
27. Head back to the left and backtrack all the way back to the start
28.  Memory:  at the blue pillars drop down into the hole
29. Head back up the moving platform then to the left
30. Cross the trap floor to the open door
31. Kill off the circle shooters and fliers as you continue to the left
32. Flip the lever to the left and then head back to the right
33. At the right raised platform jump up and to the right
34. Flip the lever
35. Jump back to the left onto the platform, then to the center platform
36. Hit the pyramid then head back to the left and throw the first lever again
37. Jump up onto the raised platform, then to the left onto the extended section
38.  Monitor Eye:  continue to the left and kill the swarms
39. Flip the lever beneath you once more, then head back to the right and jump onto the raised platform
40. Jump to the right and break down the shadow wall
41. Climb the ladder to the exit

30F 

1. Another elevator room
   
2. Jump up to the left and climb the ladder to the next area

Garden

Lower Tower

Factory

Reservoir

Residential Section

2nd Factory

Shrine

Sewer

Dark Tower

Garden Labyrinth