Playing an Adept on Silver/Gold is all about biotic detonations. It's a lot of fun and does loads of damage when done right, but it can depend on your team's composition. Done right, a Brute dies from two biotic explosions, and a Banshee takes about four, and you're likely to get some kills on nearby smaller enemies as well.
An Asari Adept is probably the most flexible, since you can easily cause detonations on your own with Warp + Throw, as well as provide some crowd control with Stasis. The Drell Adept is also good if there is another biotic on the team to detonate his Reave. The Human Adept is a somewhat weaker, since Singularity doesn't work on shielded targets while Stasis does, and the range of Shockwave is somewhat short, making it hard to detonate distant enemies.
With an Asari, I recommend putting ranking all your biotics to full (the damage of biotic explosions depends on the rank of the powers involved), 5 points in Justicar, and the remaining 3 in Fitness. Make sure to take the points that increase damage from detonations as well as the stasis bubble for crowd control.
Keep your loadout light so that you have the shortest cooldowns possible. You should be able to bring a light pistol and an SMG while staying on +200% recharge speed, though you won't be using them all that much.
Your basic strategy should be to lock down dangerous enemies like Marauders, Phantoms, Combat Engineers or Geth Hunters with Stasis, and alternate Warp and Throw on the larger armored enemies to take them down quickly with the resulting detonations.
Also, look for opportunities to synergize with your team. If there are other biotics on the team, try to either detonate their biotics or set up your own combos so that they can detonate them.
If there is another Adept on your team, try having one be a Drell with area of effect Reave to set up as many detonation opportunities for the other Adept as possible. A Drell + Asari adept combo done right can literally cause a biotic detonation every two seconds. If you have two Asari, make sure to organize yourselves so that one is using Warp and the other is using Throw. Otherwise, you will just mess up each other's combos.
Finally, note that this detonation-heavy setup isn't that good on Bronze, since enemies tend to die before you can detonate anything. On Silver/Gold though, it's very powerful.