Based on the name and my understanding of the TF2 class, a Heavy is a front-lines tanky soldier guy. But that doesn't really seem to be his role in XCOM. Assault soldiers are better at being in the front lines with their mobility and defensive abilities.
What, then, is the heavy supposed to be doing on the battlefield? What are the general strategies that are useful for heavy soldiers?
Best Answer
Heavies are your primary damage dealers.
By the way: with the "Enemy Within" DLC, the assault class can theoretically out-damage the heavy. The "Close and Personal" skill grants them one free shot per round against an enemy within 4 tiles. This can be followed with "Rapid Fire" for a 2nd and 3rd shot in the same round. "Close Combat Specialist" can give them another free shot during the enemy turn when an enemy moves within 4 tiles for a total of 4 shots per round. But keep in mind that the assault can only use this potential when played in a very aggressive and risky way, while heavies can do their damage while camping behind a full cover.