When destroying an enemy by landing on it, hold the jump button. GR-18 will ascend 4 tiles above the top of the enemy.
When destroying an enemy by landing on it, press the jump button immediately after destroying the enemy.GR-18 will ascend 5 tiles above the top of the enemy.
If you stop pressing the jump button the moment you kill the enemy. You will only slightly bounce off of it.
Throw a flapsack, jump, and then jump again when on top of the flapsack. This allows GR-18 to reach up to 10 tiles high. This is a similar technique to a Super Jump. It can be performed with similar alterations such as diagonally and off a wall.
Tech demo video :Flaspsack Jumps - aradarbel10
While mid-air, throw the flapsack downwards. The flapsack will bounce off the ground allowing GR-18 to perform a Flapsack Super Jump. This can be useful for traversing surfaces that would kill GR-18 and bounce a flapsack.
Tech demo video :Flaspsack Jumps - aradarbel10
Throw a Squished Scrubb upwards, then jump around and on top of it. Jump again. This allows GR-18 to reach a height of 10 tiles . This technique is similar to a Super Jump, except the Squished Scrubb cannot be jumped up and through.
Start 1 to 2 tiles away from a wall. When approaching the peak of the jump, throw the Squished Scrubb against the wall. It will bounce back to GR-18, which can then be jumped off of. This technique can reach 10 tiles . For an easy execution that can only reach 9 tiles, do not let go of the initial jump.
Tech demo video :Scubb Wall Jump - Sleepy Doof
GR-18 usually ‘pops’ up 1 tile after a medallion teleport. This can be increased to a height of 5 by pressing jump just as the teleportation activates.
Tech demo video :Levelhead Popjaw Pop Example - TripleB36