This isn’t to say that E.Y.E. is a bad game. I’m extremely impressed with its depth. As you’ve probably guessed, it has an RPG feel to it. You can customize your character pretty extensively. My current character favors guns, usually choosing a loadout including dual pistols and a sniper rifle. He wears medium armor and can heal a decent amount with his medkit; however, I could have gone for more melee, or magic, or favored different guns (like a shotgun or an SMG). Just like an RPG, you level up and get a few stat points to distribute if you’re feeling like you might want to go in a different direction than you originally planned.
No, really, I'm not RP'ing a junkie - that syringe is actually the medkit
As I mentioned before, players can play either campaign or mission mode in co-op. The campaign is basically a series of missions that follow a story. Sometimes your decisions during dialogue options with NPCs can change your mission objectives (would you rather completely wipe out an enemy force spread across an area, or simply assassinate their well-guarded leader?) or net you additional XP (threatening reluctant accomplices often seems to do this). Most missions have a long string of ever-changing objectives. In co-op, the first person who gets to them and performs them will make the objective indicator disappear, so staying close to each other is often desired so as to not lose one another in the large areas. When you die, you respawn after about 10 seconds in the same spot (provided you have the revival item - you get about 10 or so per mission/map). This works out fine in co-op where your partner(s) can likely dispatch what killed you before you even revive, but if you’re playing solo or no one’s close by, it can be tricky at times.
The campaign’s story is okay, but nothing spectacular. You’re a member of E.Y.E, a secret society with its own world agenda. You’ve lost most of your memory, so you have to slowly relearn things. As you progress through the game, you learn that there’s a civil war afoot within E.Y.E. as well as an unknown force on the loose. The story, however, is probably not the main draw here for most folks. The character customization, combat, and just generally feeling more than a little awesome will likely be the things that draw people in.