In this entry, we meet the other enemy and also get introduced to a few more game mechanics while also being forced to think a little more carefully compared to the levels we've played so far.
Level 16
Place both the large bomb and the small aerial bomb on the slot tiles in the upper-right corner one tile to the right. Enter the center teleporter. Place small bombs on the upper left, lower left and bottom center tiles of the slot tile rectangle, with the two large bombs on the top center and upper right tiles and the medium bomb on the lower right tile. Detonate the small bomb in the lower left tile and move down. Go right, detonate the small aerial bomb, then move up and into the nearby teleporter. Detonate small bomb and move right.
Level 17
The spinning circle with the red dial is a spinner. It will randomly knock you into one of the four cardinal directions - up, down, left or right.
The small gray circle with the black circle underneath is a large mine. Its explosion has more range than that of a small mine.
The pyramid like things are temples. Temples will nullify bomb blasts and severely limit the ranges of explosions, and that is the one advantage of temples that you'll need to look into and see how it works in order to complete some puzzles.
The brown ball enemy is another enemy you'll need to avoid, and it will usually turn left when it reaches a dead end. You can run under it as it bounces, but you'll need to time it right if you want to do things that way or else you're getting hit and losing a life.
The red robot is much like the blue robot, but it will explode as soon as it makes contact with a bomb or a mine. Be careful where you move the red robot.
Move right into the teleporter. Send the blue guy into the small mine in the lower right corner. Detonate the large bomb near the right temple and move right. Detonate the small aerial bomb in the south end and move left. Detonate the small bomb near the left temple and move up. Send the red guy into the large mine.
Level 18
Send the blue guy into the small mine in the upper right corner. Move both the swell bomb and the small bomb to the right of it on the slot tiles one tile to the left. Detonate the small aerial when the nearby swell bomb is large, then move right.
Level 19
Detonate the small bomb in the upper right corner and step left. Detonate the small bomb in the lower right corner, then move right. Detonate the small bomb in the lower left corner and step right. Go right, then up across the ice, detonate the small bomb in the upper left corner and step right. Detonate the small bomb to your right and move down. Detonate the small bomb on the other end and move left.
Level 20
Hit the switch in the center, then go to the switch at the bottom and hit it. Go left to the lower-left corner and detonate the small bomb, then move right. You should be able to get rid of the spinning spheres enemy this way. Detonate the small bomb on the right in the upper-right corner and move down. Detonate the small bomb in the lower-right corner and move left. Detonate the small bomb near the upper-left corner and move left.