Abominable Lair

Stage 10 of 18, in Stormcloud Depths.

Enemies in the campaign

7 kinds of enemy come down the paths here, and 4 of the 15 waves bring flying enemies. Counts are for the whole campaign run.

The imperial walker. Tap the imperial walker 4 times and it fires 8 shots in 4 pairs at a single point on the path, 1 to 2 seconds after the 4th tap; each shot deals 40-60 physical damage to enemies on the ground within 50. This can happen only one time per battle, in all modes.
Holes in the ice. On three of the paths, ground enemies plunge into ice holes and swim beneath the surface to another hole. While submerged they cannot be targeted, and the dive clears every effect currently on them.
Iron Challenge tower spots. In Iron Challenge, this stage offers 4 open tower spots plus 9 blocked spots, and clearing a blocked one costs 100 gold.

Not Dead Yeti: Defeat the abominable boss in Abominable Lair. 48.4% of Steam players have it.
All You Can Eat Buffet: Make the boss eat 30 enemies in Abominable Lair. 1.7% of Steam players have it.

Mode	Waves	Gold	Lives	Gems
Campaign	15	1,300	20	60-105
Iron Challenge	1	2,000	1	48 or 72
Blitz Challenge	3	1,300	3	24-36
Spell Rush	6	1,300	3	48-72
Hero Party	6	1,300	3	48-72
Classic Rush	15	1,300	3	60-105

Iron Challenge here allows only Royal Catapult and Sunray Master. The rules of each mode are on modes and difficulty.