Part A - Normal Levels - 14
LEVEL 15 - The Mettleworks
Go on the balloon to the right to get the first lum . Land on the platform and charge your fist at the door. Then go on the balloon to go up to another lum  and another platform. Go on the grease covered platform to the left, and slide off it in the same direction to reach the grate on the left. Climb to the top and get the lum . Use the balloons ahead to jump over the mines and reach a platform with a single lum . Use the balloon to go up to the purple lum and swing to the grease platform on the left. Take the balloons on the left to go over a bomb and get another lum , then swing on the purple lum to the right. Go on the balloon to go over the lava trough and land on the platform. Get the lum nearby . Charge your fist at the door and go down to another lum  and the ~FIRST CAGE~. Go on the purple lum to the left and use it to reach the balloons. Go over the bomb and then go for the grease platform on the right. Get the lum on it . Then use the balloon to reach the far right of the screen, where a lum resides . Drop down to the purple lum near the first cage and go back up to the grease platform. This time, use the balloon to reach the grater above it. Climb up and get the lum on the right , then go on the moving platform to the left. Duck under one set of mines, get the lum  and jump over another. Charge your fist at the door and jump on the balloon to reach another platform. Charge another fist at the door, get the lum  and break two more doors. Then go on the balloons to reach another grease platform. Follow a trail of them to reach the balloon to the left with a lum above it , and go right. Follow another trail of those platforms to reach another lum  and grab the Green Lum at the right.
Climb on the grate and head left over the mine and on the balloon. Go straight up on the balloon, reaching a long grease platform with three lums on it [15- 17]. Go left and hang on another grate. Get the lum above the balloon  and jump on it to another, taking you over a pair of mines on another grate. Climb down to reach a platform with a single lum . Then go up to the top and jump on the balloon there, getting the lum above it  and reaching another grease platform. Go to the right and charge your fist at the door. Head right, jump on the balloon and go up. Go left to the lum  and go on the balloons left, then up, then right, going over mines where necessary and getting the two lums along it [22-23]. At the end, get the lum on the stone platform . Go up the grate and swing on the purple lum. Take the left to your first encounter with a Henchman in a blue suit. He sends out a ball and chain at you, so keep your distance from it or jump up and helicopter over it. Then you hit him as usual. After he's gone, go left and head under the balloon for another lum  and the ~SECOND CAGE~. Jump back up and go on the balloon, get the lum above it  and ride a trail of balloons up and right, going over more bombs and reaching a long platform with the final four lums [27-30] and the exit.
Start by going left and up the grate. Get the lum on the platform  and break the ~FIRST CAGE~. Go down and get the lum  near the electric rod. Hit the red button on it to turn the force field on it off. Jump over it onto a moving platform. Hit another red button, duck under the mine, hit another red button and go over the rod before going onto a purple lum. Swing to the lum above the balloon . Hit the switch before bouncing on the balloon over the rod, and repeat before landing on another moving platform. Hit another button and go over the rod, get the lum  and duck under the mine. Hit another button, climb on the grater and go over the rod to get another lum  and land on a column of two balloons. The first one should be easy to bounce on, but by the time you reach the second balloon, helicopter down to get the button with pinpoint accuracy. Then go over the rod and swing on another purple lum. Jump for the lum  and a grease platform. On there, jump over the two mines - the first with a lum on top of it  - before going onto the platform to head right. Get the lum on the way  and hit another button to turn off another rod. Go over it onto another balloon and go right. Get the lum in the air  and swing on the purple lum. Go off, hit another button and land on the balloon to go over it. Get the lum in the air  and use the balloon to reach a moving platform. Hit the switch, go over the rod, get the lum on another moving platform , hit another switch and go over to another platform. Jump towards the extra life, hit the switch and bounce on the balloon. Go over it to land on another one. Head right to a yellow lum  and the Green Lum.
Go across two platforms down and left to reach a small isle with three lums packed close together [13-15]. Then go back up. Go on the grate and jump to another, going over a mine and reaching a lum . Go to the bottom of the grate and charge your fist to reach another button. Climb back up, get the lum above the mine , cross to another grate and go over the rod and the lava trough for another . Grab on the grate. Go to the bottom and hit the switch. Climb back up and go over the rod to a grease platform. Go over the mine and go to the stone platform on the right, where another lum  and another blue Henchman resides. There's no room to run away this time - you have to make do with jumping over the chain. After he's gone, hang to the right of the platform and break the ~SECOND CAGE~. Jump back up and go on the moving platform. Hit another red button and go over the rod to another platform. Get the lum . Hit another switch to go over another rod before going on another platform ,and repeat. Charge your fist at the door on the right, jump over the mine to get the lum  and bounce on the balloon over another. Swing on a purple lum and get the red lum. Hit the button and use the balloon to go over the rod. Slide on the platform and jump to another to reach another lum . Then go over the lava trough and go on a stone platform. Get the lum in the air  and go down to a platform with another blue Henchman. Again, there's no room to dodge him, so jump and helicopter his shots. After he's gone, helicopter to a platform on the low left, go on the grate and go to the platform on the left to get four lums on it [24-27]. Go back to where you fought the Henchman. Jump on the balloon and reach the moving platform with the lum above it . Hit the button to go over a rod, and repeat with another. Charge your fist on the door. Face left, and hit another button to turn off another force field. Get the lum above and jump for the platform to the right. Get the lum and land on a platform with the exit. But you can't get to it yet - take down the blue Henchman first! Remember - jump his shots and hit him back when he's not attacking.
After you leave the level, climb on the webs to the right. Keep going in that direction for a break from all that platform jumping.