Your character is outfitted with the EuroCorp DART 6 Chip, a revolutionary neural processing unit that gives the host extraordinary abilities. It's a customizable system that allows you to use chips ripped from high-ranking enemies to upgrade certain features of the DART 6. For example, you might want to increase your base amount of health, or increase the amount of energy gained from melee kills. Or you might want to increase the amount of time you can spend in DART Overlay Mode, which is essentially bullet-time with a digital flourish that allows you to see (and in some cases, kill) enemies who are behind cover.
The DART 6 is powered by energy synthesized from raw adrenaline. Performing well in combat (whether by shooting dudes in the face or snapping their necks) rewards you with this energy, which is used to power your breach applications. So what is breaching, you ask? Breaching is the process that allows an Agent to interface with machines from a distance. It's essentially high-speed hacking -- with the mind. So if there are snipers on the roof giving you and your team hell, you might be given the option to breach a set of shutters to block their shots. Some enemies wear special armor that must be breached before it can be fired upon. And in multiplayer, you can breach into your teammates and instantly restore them to full health. All you have to do is get close enough, maintain line of sight, and hold (LB). There are several interesting uses of this simple yet ingenious mechanic, but in terms of sheer awesomeness, few can stack up to the applications.
Applications are perhaps Syndicate's best features. These allow you to get creative with your kills and never get old. The ones used in the single-player Campaign are my personal favorites, but the multiplayer apps clearly have teamwork in mind. It's always a good idea to save your Suicide app for those moments when enemies cluster together. That way, when the breached enemy pulls the pin, it always results in a shower of gore and dismembered limbs -- as well as several less goons to contend with. Backfire is good for when you're pinned down; it usually knocks down enemies and damages them a bit. Backfire is particularly effective when coupled with DART Overlay Mode. Persuade causes an enemy to open fire on his comrades; when none are left standing, he turns the gun on himself. It's all great, morbid fun.
So this new Syndicate is not a strategy game. That doesn't mean it isn't worthy of the franchise. More importantly, this is a shooter that is unique -- a characteristic that rarely belongs to most shooters these days. It makes a number of critical missteps, but the truth is that there really isn't anything like Syndicate on the market. And that may be its greatest strength.