The Four Ways to Die Title update for Rogue Tower has 27 achievements.
Beat double defense without ever building a ballista.
Beat triple defense without ever building a ballista.
Beat quadruple defense without ever building a ballista.
Beat splitsville on single defense.
Beat splitsville on double defense.
Beat splitsville on triple defense.
Beat splitsville on quadruple defense.
Beat Ooogie on quadruple path march of the monsters.
Beat spooky Ooogie on quadruple path march of the monsters.
Beat evil Ooogie on quadruple path march of the monsters.
Beat quadruple path march of the monsters.
Defeat Ooogie in quadruple defense.
Defeat spooky Ooogie in quadruple defense.
Defeat evil Ooogie in quadruple defense.
Defeat otherworldly Ooogie in quadruple defense.
Beat quadruple defense using only ballistas.
Beat quadruple defense using only mortars and ballistas.
Beat quadruple defense using only tesla coils and ballistas.
Beat quadruple defense using only frost keeps and ballistas.
Beat quadruple defense using only flamethrowers and ballistas.
Beat quadruple defense using only poison sprayers and ballistas.
Beat quadruple defense using only shredders and ballistas.
Beat quadruple defense using only encampments and ballistas.
Beat quadruple defense using only lookouts and ballistas
Beat quadruple defense using only radars and ballistas.
Beat quadruple defense using only obelisks and ballistas.
Beat quadruple defense using only particle cannons and ballistas.