Hardcore mode

[superzip]

how about a hardcore mode, when you completed a level you can play it again, but this time the emitters spam 2x the creeps  :) or 3x  ;D

[djcian]

this is already in the game it is called double down and you unlock it after beating the campaign.

[Aurzel]

not after beating the campaign, after beating the campaign, the conquest and the special ops

[Alwego]

I can be wrong, but I think finish special ops is not necesary (I have double down long time, but I finished special ops at last week).

[superzip]

i mean when you completed level 1 you can play it again in hard mode before you move to next level and so on not when you completed the whole game

[Aurzel]

well playing hard mode is kind of a reward for finishing the maps, and alwego i believe you have to earn all the achievements in the hall of honours which involves beating all the maps, where's virgil to clarify when you need him? lol

[knucracker]

To unlock double down, you have to basically play every mission (to get every achievement).  Once you have done this, the DD button will appear.