When it hits
When the story calls it on the Student's run
Part of 
The Last Push, starts with 
The Last Push - Day 2.
The same wave on the other runs: Wage Slave
Who comes, and where
62 zombies: 31 door · 31 window.
Every zombie in it has ×2.76 HP, bites ×10 as hard, bites ×1.3 as often, on top of the horde setting.
At the door 31
| Zombie | How many | At once | HP each | Bite |
|---|---|---|---|---|
| Office Worker Zombie | 9 | 4 | 359 | 10 |
| Nurse Zombie | 5 | 3 | 303 | 10 |
| Barefoot Zombie | 5 | 1 | 221 | 10 |
| Crawler Zombie | 4 | 1 | 276 | 10 |
| Worker Zombie | 3 | 1 | 552 | 20 |
| Neighbor Zombie | 3 | 1 | 248 | 10 |
| Brute Zombie | 1 | 1 | 717 | 30 |
| Soldier Zombie | 1 | 1 | 607 | 40 |
At the window 31
| Zombie | How many | At once | HP each | Bite |
|---|---|---|---|---|
| Office Worker Zombie | 8 | 3 | 359 | 10 |
| Nurse Zombie | 5 | 3 | 303 | 10 |
| Barefoot Zombie | 5 | 1 | 221 | 10 |
| Crawler Zombie | 4 | 1 | 276 | 10 |
| Worker Zombie | 3 | 1 | 552 | 20 |
| Neighbor Zombie | 3 | 1 | 248 | 10 |
| Hulk Zombie | 1 | 1 | 1,379 | 80 |
| Brute Zombie | 1 | 1 | 717 | 30 |
| Soldier Zombie | 1 | 1 | 607 | 40 |
What beating it pays
A wave's total HP sets its reward tier. Each tier pays its reward, and the zombies you kill leave loot on the ground.
| Zombie Horde Intensity | Total HP | Reward |
|---|---|---|
| Weak | 16,798 | Tier 4 |
| Standarddefault | 22,397 | Tier 4 |
| Strong | 27,995 | Tier 4 |
| Very Strong | 33,577 | Tier 5 |
The game also adjusts each wave to how ready your home is (doors, defenses, supplies and how the last wave went), so the HP here is the starting point.
From the game files2
TowerWave 2041
| ID | 2041 |
|---|---|
| EventID | 52608 |
| OwnerCrisisID | 129 |
| ZombieTypeList | [9105,9104,9102,9109,9103,9106,9101,9107] |
| ZombieCountList | [1,1,3,4,9,5,3,5] |
| MaxAliveCount | [1,1,1,1,4,3,1,1] |
| ChargeThreshold | 0.2 |
| TargetSlotTypes | [8] |
| AttackMultiplier | 10 |
| HpMultiplier | 2.758 |
| AttackSpeedMultiplier | 1.3 |
| SpawnAnchor | ZombieSpawn_01 |
| SpawnInterval | 2 |
TowerWave 2042
| ID | 2042 |
|---|---|
| EventID | 52608 |
| OwnerCrisisID | 129 |
| ZombieTypeList | [9108,9105,9104,9102,9109,9103,9106,9101,9107] |
| ZombieCountList | [1,1,1,3,4,8,5,3,5] |
| MaxAliveCount | [1,1,1,1,1,3,3,1,1] |
| ChargeThreshold | 0.2 |
| TargetSlotTypes | [9] |
| AttackMultiplier | 10 |
| HpMultiplier | 2.758 |
| AttackSpeedMultiplier | 1.3 |
| SpawnAnchor | ZombieSpawn_02 |
| SpawnInterval | 2 |