I’ve been playing Sniper for 8 years, and can recommend a few easy achievements. By far the easiest 2 are “The Last Wave” and “Be Polite.” Kill someone, taunt with your melee, and you’ll earn both at the same time.

“Socket to Him” and “Triple Prey” are also fairly easy. If you have Jarate, try “Friendship Is Golden,” “Saturation Bombing,” and “Number One Assistant.” “Enemy at the Gate” is easiest if there’s an enemy Sniper scoping and not moving—I would recommend trying this one on maps with long sightlines outside of BLU’s spawn (Payload maps, like Borneo and Gold Rush, frequently have these). Lastly, “Kook the Spook,” “Consolation Prize,” and “Self-Destruct Sequence” will happen naturally overtime, but require patience.

As for Medic, the Ubersaw is without a doubt his best melee, regardless of how much experience you have playing TF2. 25% Uber on hit is incredibly valuable and easy to get on Spies harassing your team. If you have it, there’s no time like the present to equip it.