Oh gravity, thou art a heartless bitch achievement; floating islands, in a game where many spells can throw you across the whole screen; there are some sadistic developers working on Magicka, for sure.
I'm at the end of chapter 6, fighting against successive groups of mages, and mostly getting myself voted off the island, in a very direct and painful way. Are there any way of protecting myself against being thrown across the screen and off the island, except throwing everyone else off first?
Set up wall spells behind you.
Don't use a shield.
Throw them off before they throw you.
Pray.
While I agree with the foreanswerer on some techniques, there's one that works wonders if you have access to it - teleportation.
It can be achieved by either the Teleport spe-- cough... Magick... or the Staff of Emergency Teleport. Since you're in the sixth chapter and the Magick is unlocked in the seventh, try finding a Goblin Shaman for the safety measure this staff provides.
In the first battle on the floating islands, kill one of the shamans and take their staff. If you get thrown off now, press the middle mouse button and you get teleported to a random place on solid surface.
A hint for the third island: as soon as you spawn, press E -> right mouse button to create a shield in front of you to avert the first combined arcane blast.
Good Luck :)
