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| Tier | Unlock Method | Key Features |
|---|---|---|
| Tier 1 | Basic world drops (Kepler, low-tier events) | Seasonal mod compatibility (after unlocking); basic perks |
| Tier 2 | Early campaign, low-tier Season content | Enhanced origin trait added for stronger passive effects |
| Tier 3 | Portal events, Onslaught, focused engrams | Two perks per column — choose the best combo without rerolling mods |
| Tier 4 | Overthrow zones, late-season events, Legend content | Includes enhanced mods (adept/seasonal), upgraded barrels/mags |
| Tier 5 | Pinnacle challenges, raids, focused Tier 5 farming | Three perks per column, enhanced traits, unique shader/ornament, blue-flame kills, +5 to all stats |
Tier 5 unlocks prestige-tier performance: exclusive visuals, enhanced stats, and unmatched perk flexibility for top-tier play.
| Column 3 | Column 4 |
|---|---|
| Built to Blast | Dynamic Sway Reduction |
| Feeding Frenzy | Binary Orbit |
| Demolitionist | Dragonfly |
| Moving Target | Closing Time |
| Subsistence | Adagio |
| Headstone | Rimestealer |
| Envious Assassin | — |
You will need to perform farm activities and collect engrams to get the Ulterior Observation into your collection. This will take some time, especially if you want to get the God Roll and customize your weapon. The fastest way to get Ulterior Observation without struggling is to buy D2 Ulterior Observation Carry and let the professional handle all the grind for you.
Tier 5 versions of Ulterior Observation come with three perks per column for extreme roll customization. You will get the enhanced origin traits, which are more powerful. Exclusive ornaments, shaders, and blue-flame kill visuals. +5 to all stats when fully Masterworked. The prestige and raw power needed for top-tier PvE and PvP builds.