Image: IGN (fair-use)

The Ice Man Cometh (Mr. Freeze)

Chapter 4 · ACE Chemicals / Black Mask Hideout → Broadcast Tower → Gotham Observatory

Chapter 4

Source antifreeze at ACE Chemicals, ambush Black Mask, jam Freeze's broadcast convoy, then a two-phase Mr. Freeze fight at the Observatory; Batman gets frozen and Nightwing + Batgirl arrive to take the Freeze Mech down.

Minikits

10

WayneTech Caches

5

Snow Globes

5

Red Brick

Ice Age

Walkthrough

1. 1 Antifreeze — Black Mask hideout: hack Freeze's communications array with Batgirl.
2. 2 Disable Black Mask's three security terminals: clear the foyer, disable the fire-breathing pipe, move the spotlights to avoid detection.
3. 3 Black Mask reveals Freeze is at the Gotham Observatory — exit cutscene.
4. 4 Tonight's Forecast — chase the chemical convoy across Gotham streets; ram the lead tanker to stop it.
5. 5 Jam the broadcast tower with a hacked transmitter to silence Freeze's signal.
6. 6 Observatory arrival — clear the enemy wave guarding the dome.
7. 7 Boss Phase 1 (Freeze, Batman) — jump before each wide freeze AoE; punish the slow attacks.
8. 8 Batman gets frozen — switch to Nightwing + Batgirl.
9. 9 Build the generator: Batgirl hacks the middle switch, then Nightwing's Electrorang hits the three high red sockets for the Ice Age red brick.
10. 10 Nightwing's Cable Launcher to the telescope; Batgirl's Hackarang lowers the telescope.
11. 11 Nightwing climbs to charge the telescope — triggers Phase 2.
12. 12 Boss Phase 2 (Freeze Mech) — sidestep the linear frost wave; attach Nightwing's cable to a falling icicle and launch it back into the mech.
13. 13 Snow Globes 1–5: (1) behind freeze cannon legs (look up-left), (2) ring above Red Brick puzzle (up-right), (3) outer ring, (4) outer ring above a light, (5) underside of freeze cannon.
14. 14 Final mech KO ends the mission and the chapter.