Enemies
Demon, summons portals using it's left hand to let enemies float through time.
Angel, locks up towers for 5 seconds, making them unable to attack. Kill them quick or your forces will be diminished...
Distractor, forces you to play a minigame occasionally. Don't fail, or else everything suddenly will become much faster than you remember...
Necromancer, revives dead allies at a fraction of their true power. Kill quickly or face the consequences of your past murders
Tyrant, taunts all towers in a certain radius around itself and forces them to target him. Plan to slow him down as much as you can, or you may not be able to kill every enemy in time...
Allies
Towers are available randomly, push yourself with whatever you have left..
Ice Tower, has a random chance to make all enemies stop moving for 5 seconds
Fire Tower, sets nearby enemies on fire for 5 seconds
Rage tower, makes all towers stronger for a short period of time. Disables all possible debuffs while active, but cannot be activated when a tower is debuffed
Bomb Tower, hits all enemies in a certain radius with insane damage.