Disgaea 4 A Promise Unforgotten: X-Dimension Guide Chapter 10 Pt.2
Stage 4: You will require 7 characters with a throw range of six. Lift and throw characters from pillar to pillar and toss to the single Bio Suit. Or you can be like me and have a character with a high enough jump to reach the highest geo block tower and throw someone at the Bio Suit. Or alternatively, have an archer with high enough attack range, really there are many ways of doing this.
Stage 5: You have to get the Geo Block on the very top to the bottom level in one turn. You either need to make a staircase of Umbra Blocks or have a character with a high enough jump to do it one go. After solving the puzzle, simple kill the thieves.
Stage 6: The last stage is a bit anticlimatic but I decided to go out with a bang. Move a character with range skills to the clear panel and hit the five Androids. I chose to use Tera Ice, one of my favorite spells.