Difficulty

There are 10 different classifications of Cosmic Anomaly, ranging in difficulty from easy (class 1) to hard (class 10). Among these, Anomalies of certain classes appear in 4 different levels, which seem to indicate increasing difficulty from Level 1 (easiest) to Level 4 (hardest) For example, an Angel Hideaway would be easier than an Angel Forsaken Hideaway, both of which are easier than an Angel Hidden Hub.

Cosmic Anomalies			Levels
Class	(Faction) Name	Rogue Drone Variant	1	2	3	4
1	(Faction) <Level> Hideaway	Drone Cluster		Hidden	Forsaken	Forlorn
2	(Faction) Burrow	Drone Collection
3	(Faction) Refuge	Drone Assembly
4	(Faction) <Level> Den	Drone Gathering		Hidden	Forsaken	Forlorn
5	(Faction) Yard	Drone Surveillance
6	(Faction) <Level> Rally Point	Drone Menagerie		Hidden	Forsaken	Forlorn
7	(Faction) Port	Drone Herd
8	(Faction) <Level> Hub	Drone Squad		Hidden	Forsaken	Forlorn
9	(Faction) Haven	Drone Patrol
10	(Faction) Sanctum	Drone Horde
High Sec · High & Low Sec · Low Sec · Low & Null Sec · Null Sec

It's not uncommon to find the same type of Anomaly Class with different Levels located in the same system. For example - (Faction) Hideaway, (Faction) Hidden Hideaway, (Faction) Forsaken Hideaway and (Faction) Forlorn Hideaway can all spawn in the same system along with other types of Anomaly Class.