Special Stages · Stage 5

N2+3H2→2NH3

Ｎ2＋３Ｈ2→２ＮＨ3

N2+3H2→2NH3 is a Battle Cats stage in Summer Lesson. It costs 100 energy and sends 10 enemy spawn lines — led by Doge Dark as the boss — against a 250,000 HP enemy base, and clearing it rewards 8,930 XP. Its enemies carry the Red, Floating and Black traits, so cats that target them do the most work here.

Data updated: 2026-08-31

100Energy Cost
8,930XP Reward
250,000Enemy Base HP
5,000Stage Length
10Max Enemies
6.1Difficulty
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Cats that counter N2+3H2→2NH3

Cats whose attacks target Red, Floating and Black, best DPS first — the traits this stage’s enemies actually carry:

Chun-LiLovestruck Lesser DemonTakeda ShingenBunny & CanardDaybreaker IzanagiMighty Rekon Korps

Stage rewards

100% — Lucky Ticket ×3 · first clear40% — Lucky Ticket ×360% — Lucky Ticket ×1

Enemy spawns (10)

EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotes
Pigge800%30s13.3s~16.7s100%—
St. Pigge the 2nd300%10s—100%—
Owlbrow200%240s10s~13.3s100%—
Pigge800%∞100s30s~50s100%—
Shadow Boxer K100%20s30s99%—
Doge Dark400%160s6.7s~13.3s99%—
Gary Gory300%60s16.7s~23.3s99%—
Teacher A300%20s20s99%—
Doge Dark10%10s—99%Boss
Ms. Sign100%∞900s900s100%—
All Summer Lesson stages