Survive until the tenth wave of a run.

Survive until the twentieth wave of a run.

Reach wave thirty: that is the whole schedule.

Kill five hundred enemies in a single run.

Deal a million points of damage in a single run.

Earn a hundred thousand gold in a single run.

Reach wave ten without losing a single point of tower health.

Reach wave ten without buying a single upgrade. Spikes do not count: the map treats a spike as a damage source.

Reach wave ten buying only one kind of weapon. Extra copies of it are fine, a second kind is not.

Reach wave fifteen without buying a single income source.

Play ten runs to the end.

Kill ten thousand enemies in total.

Unlock ten of the sixty towers.

Unlock all sixty towers.

Face all eight armies: bandits, humans, sea folk, undead, orcs, elves, brimstone orcs and druids. The army is rolled anew every wave, so a long run shows more of them than a short one.

Buy fifteen DIFFERENT weapons across all your runs. Names count, not copies.

Deal ten million points of damage across all your runs. Every run counts, lost ones included.

Challenge, start of wave 25: every weapon stuns

Challenge, start of wave 25: every weapon heals

Challenge, start of wave 21: every weapon is poison

Challenge, start of wave 21: all damage is Piercing

Challenge, start of wave 21: all damage is Normal

Challenge, start of wave 25: every weapon is common

Challenge, start of wave 21: no healing sources at all

Challenge, start of wave 25: no upgrades bought at all

Challenge, start of wave 21

Challenge, start of wave 17: all damage is Normal

Challenge, start of wave 17: all damage is Piercing

Challenge, start of wave 17: all damage is Magic

Challenge, start of wave 17: all damage is Siege

Challenge, start of wave 17: all damage is Chaos

Challenge, start of wave 17: Normal damage from Impalers

Challenge, start of wave 17: every weapon is poisonous

Challenge, start of wave 17: every weapon bounces

Challenge, start of wave 17: only common weapons

Challenge, start of wave 17: every weapon stuns

Challenge, start of wave 17: every weapon splashes

Challenge, start of wave 17: only single-target weapons

Challenge, start of wave 25: no income sources at all

Challenge, start of wave 17: only uncommon weapons

Challenge, start of wave 13: no income sources at all

Challenge, start of wave 17: heal only via bomb, masonry

Challenge, start of wave 13: all weapons at 300 range

Challenge, start of wave 17: all weapons at 1200 range

Challenge, start of wave 17: no max health bonuses

Challenge, start of wave 17: all weapons at 600 range

Challenge, start of wave 17: all weapons at 900 range

Challenge, start of wave 25: Normal damage from Impalers

Challenge, start of wave 25: all damage is Normal

Challenge, start of wave 25: all damage is Piercing

Challenge, start of wave 25: all damage is Magic

Challenge, start of wave 25: all damage is Siege

Challenge, start of wave 25: all damage is Chaos

Challenge, start of wave 17: only rare weapons

Challenge, start of wave 17: one weapon kind all run

Challenge, start of wave 25: no gold on kill bounty

Challenge, start of wave 25: no gold on income

Challenge, start of wave 13: every weapon heals

Challenge, start of wave 21: no spike upgrades

Challenge, start of wave 17: every weapon is frost

Challenge, start of wave 25: weapons scale with tower

Challenge, start of wave 25: one letter group only

Challenge, start of wave 17: every weapon is fire

Challenge, start of wave 17: every weapon is a wave

Challenge, start of wave 25: every weapon is poisonous

Challenge, start of wave 25: every weapon is frost

Challenge, start of wave 25: every weapon is fire

Challenge, start of wave 17: only Magic Coins

Challenge, start of wave 25: Magic Treasure kept shut

Challenge, start of wave 17: every weapon hits an area

Challenge, start of wave 21: every weapon is a glaive

Challenge, start of wave 17: no upgrades all run

Challenge, start of wave 17: all weapons scale with tower

Challenge, start of wave 25: Mana Shield never broken

Challenge, start of wave 25: income cap never broken

Challenge, start of wave 25: weapons and upgrades equal