Rabbids Big Bang
20 Achievements
200
8-10h
Speedy
Reach speed of 800 m/h
9
How to unlock the Speedy achievement in Rabbids Big Bang - Definitive Guide
You're going to want to aim directly to the left and use all your jet pack fuel going out as far as you can. Once you're out of fuel refill it using 10 coins and wait for gravity to pull you back toward the planet. When your Rabbid's head is pointing to the right side of the screen and the planet is back in your view use the jet pack again and don't stop. If you did it right you should go flying past the planet and swing by all the other planets as well. By the time you run out of fuel you should have the achievement.
This achievement requires that you reach a speed of 800 m/h. There is no way top tell how close you are really getting to this threshold. Some levels have objectives to reach certain speeds and they display a speedometer. However, once you reach the threshold (the largest is 650 m/h), the level will be complete. Normally there is no way to tell. After fully upgrading your jetpack and bat, this achievement should come without even trying, especially towards the end of the game when there are large planets with strong gravitational pull. Basically you just need to launch yourself past a huge planet until the gravity slows you to a stop, then you will quickly be accelerating back towards that planet. At this time use your jetpack full blast and narrowly dodge the planet on your return. This is somewhat like a slingshot and will really get you moving.