Compendium

The Compendium is a menu in Zenless Zone Zero that displays several sub-menus: Primer, Errands, Training, and Challenges.
==Primer==
The Primer is a game system that grants rewards for completing primer missions. The missions are categorized into nine trial sessions. After all missions in a trial session are completed, the next trial will be unlocked.
Mission ! 	Mission Reward	Trial Reward
Trial No. 1 	Trial No. 1 	Trial No. 1
Complete the Main Commission "The Proxy and the Hare" 	 	
Go to Waterfall Soup for some noodles 	 	
Complete 1 Exploration and 1 Combat commission 	 	
Upgrade an Agent to Lv. 10 	 	
Upgrade a W-Engine to Lv. 10 	 	
Trial No. 2 	Trial No. 2 	Trial No. 2
Drink coffee once at Coff Cafe 	 	
Head to the HIA Club and complete 1 round of Combat Simulation 	 	
Go to Godfinger and play an arcade game once 	 	
Promote 1 Agent 1 time 	 	
Modify any W-Engine once 	 	
Trial No. 3 	Trial No. 3 	Trial No. 3
Complete the Main Chapter "Cat's Lost & Found" 	 	
Reach 400 Engagements in today's Errands 	 	
Upgrade two Agents to Lv. 20 	 	
Upgrade two W-Engines to Lv. 20 	 	
Collect 3 medals on Sixth Street Officer Mewmew's first page 	 	
Trial No. 4 	Trial No. 4 	Trial No. 4
Upgrade Agent skills 10 times 	 	
Reach Inter-Knot Reputation: Certified Proxy 	 	
Complete Soldier 11's Agent commission "Passing Off as Fake" 	 	
Complete "Qualification Assessment — Edge" in Hollow Zero once	 	
Optimize any Bangboo system at Turbo once 	 	
Trial No. 5 	Trial No. 5 	Trial No. 5
Upgrade 3 W-Engines to Lv.30 	 	
Complete "Old Capital Metro-Edge" in Hollow Zero once 	 	
Clear Floor 3 in Shiyu Defense 	 	
Upgrade 1 Agent's Core Passive 2 times 	 	
Upgrade 3 Agents to Lv.30 	 	
Trial No. 6 	Trial No. 6 	Trial No. 6
Complete the Main Story Chapter "A Call From the Hollow's Heart" 	 	
Complete "Construction Ruins - Frontline" in Hollow Zero once 	 	
Activate any 2-piece Drive Disc set effect 	 	
Head to Scott Outpost and clear Routine Cleanup 1 time 	 	
Upgrade 4 Drive Discs to Lv.3 	 	
Trial No. 7 	Trial No. 7 	Trial No. 7
Clear Floor 5 in Shiyu Defense 	 	
Complete the Main Story Chapter "Mission Unthinkable" 	 	
Head to Scott Outpost and clear Notorious Hunt 1 time 	 	
Activate a A-Rank or higher 4-piece Drive Disc set effect 	 	
Complete all Agent Stories for 1 Agent 	 	
Trial No. 8 	Trial No. 8 	Trial No. 8
Complete "Abandoned Skyscraper - Interior" in Hollow Zero once 	 	
Complete the Main Story Chapter "The Midnight Pursuit" 	 	
Upgrade 3 W-Engines to Lv. 40 	 	
Upgrade 3 Agents to Lv. 40 	 	
Upgrade 1 Agent to Trust Lv. 3 	 	
Trial No. 9 	Trial No. 9 	Trial No. 9
Upgrade 1 Bangboo to Lv. 40 	 	
Raise 3 Agents' Trust to Lv. 4 	 	
Reach Inter-Knot Reputation: Elite Proxy 	 	
Upgrade Agent Core Passives a total of 10 times 	 	
Collect 150 Observation Data 	 	
Clear Shiyu Defense: Stable Node - Seventh Frontier 	 	
==Errands==
Errands is a game system where the player can do daily tasks in exchange for rewards. There are various tasks the player can complete to gain varying amount of "engagement" depending on the task. The player will receive rewards at 100, 200, 300, and 400 engagement.
===Rewards===
Engagement 	Reward
Engagement 100 Reward	
Engagement 200 Reward	
Engagement 300 Reward	
Engagement 400 Reward	
===Possible Tasks ===
Task 	Engagement rewarded
Log in to the game 	100
Try 1 coffee 	100
Check in with a scratch card at the newsstand	100
Open the video store for business 	100
Complete a Hollow Zero combat once 	400
Spend 60 Battery Charge 	200
===Weekly Custom Schedule===
==Training==
Training is a game menu that allows the player to quick-jump to various training challenges in the game.
===Combat Simulation===
The Combat Simulation tab allows the player to teleport to the HIA Club and automatically opens the corresponding menu for the Combat Simulation challenge they selected.
==Challenges==
==Navigation==