To unlock these two achievements, you need to use the suction-cup 400 times. Suction-cups start out attached to the wall. You tap them once to release them, and then again anywhere on-screen to suction them again. This two-step process counts as a single use. The best spot to grind these is Level 4-19. From the start of the level, tap and release the bottom two suction-cups (one from left and one from right). Once they fall and come to a stop, repeatedly keep tapping on both of them on screen as they hang until the achievements unlock. You are only limited by how fast you can tap!