A great guide that identifies the exact problem: if you want to play Colossus you have to grind until you get the correct gear for the one single configuration that works, and then you have to approach every fight exactly the same way and hope your one single tactic will be appropriate for the situation.

To me it was boring. Every other Javelin has great versatility and has ways to engage enemies in a variety of ways at different distances. Colossus is hiding in cover waiting for his paper shield to recharge while everyone else is zipping around the battlefield actually killing enemies.

Yeah, I can get my Colossus to a point where I'm not a drag on the team, or I can just play Ranger and do everything better right from the start.