A friend is focusing on mass grenadiers and doing well with that strategy
Heh, no wonder he's doing well as they are totally broken and all game balance goes out of the window.
* Mobs are close together when you you first see 'em. You open with granade and now you have severely damaged alien group left.
* Granadiers first tier talent is either blast padding (tanking) ir shredding (destroying enemy armor)
* Granadies destroy enemy cover from great distance. Cover is the main issue between getting successful hit or missing badly
* Are you hurry in a mission and something is in your way. Blow hole to the wall and run to your objective saving 1-2 turns.
* Give shredder granadier weapon upgrade "stock" and you'll never miss (all classes can use this but works best with shredder). Also remove enemy overwatch at the same time
* Most missions have only 3-4 enemy pods. You'll have enough granades. If you run with 3-4 granadiers, you'll faceroll just about everything.
* Mines... let's not talk about mines as they are even more broken then in Enemy Within.
Mimic beacon is single most broken item in game, especially since there are so few enemies and enemy pods in each mission. Even if you have horrible round where everyone miss those 90+% shots (except granadiers of course since they can't miss a granade, unlike in original Enemy Unknown and Terror From the Deep), throw a mimic beacon and all your squad survives. If you run with two, you'll most likely never take damage.