Mass Effect 2 Dossiers Part 2: What Horizon Unlocks and What to Do Next

Mass Effect 2’s dossier flow takes a turn after you finish the “Horizon” mission, unlocking a second batch of assignments that move you closer to the threat posed by the Collectors. This guide section focuses on what comes next—what you receive, where it fits in your quest schedule, and which major task lines are tied to that handoff.

Key takeaways

• The second dossier set becomes available after completing the “Horizon” mission.
• Three of these dossiers are provided to Shepard by the Illusive Man.
• The Collector Ship mission is treated as mandatory and pauses other activities the way “Horizon” does.
• After the Horizon reunion, the Illusive Man sends Shepard three additional dossiers to build out the team of specialists.
• This section also points players to other Mass Effect 2 guide topics, including walkthroughs, side quests, and romance options.

Checklists and what unlocks after Horizon

This portion of the Mass Effect 2 wiki guide is centered on the second wave of Dossiers you pick up once “Horizon” is complete. In total, three of those dossiers are handed to Shepard by the Illusive Man, and the section also covers the Collector Ship mission. Like “Horizon,” the Collector Ship objective is mandatory, meaning it interrupts whatever you were otherwise doing and forces you to pivot to the next critical step.

Once you’ve reunited on the colony of Horizon, the Illusive Man delivers three more dossiers to Shepard. The purpose is to round out your roster of highly skilled specialists, preparing your squad for the next phase of the fight against the Collectors.

More help: related guide pages and navigation

If you’re looking for additional Mass Effect 2 assistance, this section directs you to several other guide pages, including changes for the Legendary Edition, general how-to guidance, key decision outcomes, romance options, a walkthrough, and coverage of side quests.

• Legendary Edition Changes
• How-To Guides
• Key Choices and Consequences
• Romance Options
• Walkthrough
• Side Quests

Next up and guide sections

After this checklist-style entry, the guide indicates the next step as “Dossier – Tali.” It also lists top sections you can jump to, including Legendary Edition changes, the basics, tips and tricks, and additional how-to guidance.

• Legendary Edition Changes
• Basics
• Tips and Tricks
• How-To Guides

Finally, the page includes prompts for feedback (“Was this guide helpful?”) and a section label indicating what’s included in the guide (“In This Guide”).