Ok, in the game and in the instructions it will tell you not to touch walls.

Seriously, don't.

For some stupid reason, they hurt you a lot and you have very little time to react. I did it by accident and died :X

You move much slower than the enemies, after picking up a slow down enemy pickup, you move the SAME speed as them temporarily.

If you explode before picking up at least 10 or so critical massas, and you only took out 1-4 enemies it might be worth giving up because it becomes increasingly difficult as you have to pick up more massas to be able to explode.

DO NOT touch the walls, you die with or without a shield...

Want a higher score? Play through a few times to get the hang of it and then do a speed run :)

The level that "lags" isn't actually lagging

Arrange your team so weaker units are at the back, and stronger ones at the front. Try to keep the stronger units adjacent to each other to avoid your weaker units dying to area effect spells...

Try knocking out one colour at a time.. Then you end up with at least a few large chunks of one colour left.

When you get team players to join you, you can change their attack stance from 3 different styles:

Defensive will mean they will try to protect themselves and you more often than anything else.

Offensive will mean they will try to attack more than anything, and will avoid healing you or themselves often.

Tactical is a mixture of the two, usually offensive and when needed defensive.