Chapter 1 — The Long Watch

Level 3: Frozen Crossing

❄️ Tundra 3 waves 2 entrances No disasters

A frozen tundra with enemies approaching from both flanks.

Map

Entrance ×2 (row 0, columns 2, 8)
Fortress (3×3, bottom centre)
🗻 Mountain ×1 (S-tetromino (zigzag))
🌳 Forest ×1 (T-tetromino (T-shape))
🌊 River ×1 (I-tetromino (1x4 line))

11×18 grid, 12 cells of it terrain. Terrain is impassable and unbuildable; enemies enter at the marked cells and path to the fortress.

Vitals

Starting gold46g

Waves3

Total enemies42

Difficulty●○○○○

3 stars★★★ ≥ 90% fortress HP

2 stars★★☆ ≥ 50% fortress HP

Arsenal

Towers: 💣 Cannon Tower ❄️ Frost Tower 🏹 Scout Tower New: Frost Tower

Spells: ⚡ Chain Lightning 🔥 Fireball New: Chain Lightning

Enemies you will face: Flyer Grunt Runner

Waves

Wave	Composition	Count	Spawn gap	HP ×	Total HP	Kill gold
1	Grunt×8 Runner×4	12	0.7s	×1	480	12g
2	Flyer×6 Grunt×6	12	0.6s	×1.22	768.6	18g
3	Runner×8 Flyer×6 Grunt×4	18	0.55s	×1.44	1123.2	24g

The wave counter resets per level, so HP scaling here starts from ×1 regardless of which level you are on.

Difficulty read

Total effective HP2371.8

Gold available112g (46 start + 54 kills + 12 bonus)

Leak damage if unopposed66 (1.3× the fortress's 50 HP)

Gold available assumes you kill everything. Against 2371.8 total HP, that is roughly 21.2 HP to remove per gold piece you will ever hold — a useful sanity check on whether this level wants more towers or more upgrades.