**The Library: four stops worth making between the Flood fights**
Halo: Campaign Evolved. Route and collectible guide; not the original Library's floor-by-floor layout.
The remake changes this level enough that following an old Black Eye or Eye Patch guide will send you looking for the wrong things. Your list here is Tilt, Pop, Tangent III, and Famine.
**Service tunnel and Tilt**
Follow Guilty Spark through the opening fights. At security doors, look behind you as well as toward the door: Flood can arrive while you are waiting for the Monitor. Give carriers room to explode instead of letting them crowd your feet.
After the Flood-covered service tunnel, you emerge where Spark and the Sentinels are fighting. Turn back toward the tunnel entrance and climb the sloping support beside it. **Tilt** is at its top. Collect it before following the drones onward.
**Pop and the optional door**
Continue through the elevator sequence into the section introduced as **Wait, It Gets Worse!** Follow either side around to the security door where Spark stops to unlock it. Defend the area, then face the door and turn around.
**Pop** is on the raised wall ledge opposite that door. Climb one of the nearby slopes and jump across the intervening platforms to it. Clear the immediate fight before trying to line up the jumps; the skull does not require you to platform while surrounded.
Through the opened door, there are two controls. The objective points you toward the right-hand one. Use the **left-hand control** for the collectible detour. Enter the room it opens and take the passage at its back-left. Remove the Flood growth blocking the way, then reach **Tangent III** and the supplies beyond. Return and use the proper onward route afterward.
**Getting through the later rooms**
Take the available shotgun and replacement ammunition as you progress. Keep an escape direction when fighting in a doorway: a useful choke point becomes a trap if another group arrives behind you.
The later encounters include heavier Flood threats and more security-door holds. Preserve strong weapons for those enemies instead of spending every powerful shot on a single infection form. Keep looking for the next safe resupply spot between fights.
At the bridge-platform section, activate the crossing and use it rather than trying to clear every enemy underneath. Follow the route onward through the remaining corridors and lifts.
**Famine and the final chamber**
After the elevator into **Fourth Floor: Tools, Guns, Keys to Super Weapons**, go straight ahead down the short ramp. Just inside the doorway, inspect the corner on your left for **Famine**. It is a ground-level pickup, not another high ledge puzzle.
Restock before the final defense. Keep enough separation from the heavy Flood enemies to avoid being pinned against a wall, and continue through the opened route once Spark finishes his work. Reach the Index sequence to end the mission.
Check all four entries before leaving the level. The optional left-hand control after Pop is the easiest place to follow the mission correctly while still missing a collectible.
**The Library: four stops worth making between the Flood fights**
· Games / Halo: Campaign Evolved