Archetypes: Scrapper, Tanker, Defender, Controller, Blaster.
Origins: Mutant, Science, Technology, Natural, Magic.
Scrapper: All out fighter.
Defender: Buff/debuff specilist.
Controller: Controls the actions of villians to a degree.
Blaster: Ranged attacker
The goal of the game is to get your character to the next Training Level (from 1 to 50). At certain Levels (14, 20, other increments) you can gain significant powers and abilities and even a new wardrobe. Players earn points in battle, and can earn inspirations (temporary boosts) and enhancements (permanent boosts). The tougher the mission and the higher level of villains, the more XP earned.
Gameplay is basic and simple once the rules and weapons are learned, and can become repetitive as missions tend to repeat themselves in locations and type of villains.
The greatest enjoyment most players have comes from designing their superhero character in the first place, and in achieving certain types of powers (flight, superspeed) that makes their characters more superhero-ish.
Within the game, the best way to boost to the next level is to undergo Task Forces, a series of missions along a particular storyline. Available only at certain levels on certain maps. Do be prepared to play between 4-6 hours completing a Task Force.