## Heavy enemies are a real threat now
The audit found something broken under the hood of the *difficulty* curve:
every enemy has a "damage when it reaches the center" stat (Contempt hits for
15, Despair for 10...), but **none of it ever landed.** A working defense killed
every heavy every time, so the only things that ever leaked were 1-damage
fodder. The enemy-damage escalation you see as runs go deeper was effectively
decorative.
This patch makes heavies earn their keep:
- **Heavies are armored.** Sadness, Contempt, Envy, and Despair now carry a
depth-scaled shield on top of their health. A single upgraded tower can no
longer melt one inside its crossing window — you stack coverage or you take
the hit. Their real damage finally connects.
- **Heavies get faster as runs deepen**, so a mid-strength defense gets fewer
shots at them.
- **Waves interleave fast fodder with heavies** instead of feeding heavies in
one clump at the end, so your towers split targets instead of focusing the
big ones down one by one.
Net effect: later waves put genuine pressure on the health pool again, and
letting a heavy through is a real mistake — not a 1-point shrug.