6. Sniper Elite 4 Deathstorm Part 1: Inception

The majority of these achievements can be done in one playthrough on cadet difficulty. Stay undetected (do not have "cover blown") and complete all secondary objectives. Be sure to melee kill all snipers throughout the mission.

You will be prompted to take out Major Volker Grun (optional objective). Loot his corpse and take his body to the end of the ship and throw it out to sea. This should unlock:

King of the World

Inception - Dump Major Volker Grün's body into the water from the end of a boat

There is a main objective that requires you to destroy the net. Launch the torpedo without having your cover blown to unlock:

Karl Shot First

Inception - Get to the destroyer and launch the torpedo without being spotted

You will eventually encounter a tank travelling in the northeast portion of the map. The route remains static, so drop the cargo hanging from the crane on the tank to unlock:

Heads Up

Inception - Destroy the tank with a crane drop

Two officers hold keys to the train door; a main mission objective. Rather than blow the train door, collect these keys from the officers and open the train to unlock:

Save Keys to Open Doors

Inception - Unlock the train door using the keys found on the officers

Finish the mission to unlock:

Shore Leave

Inception - Complete the mission

Knife to a Gun Fight

Inception - Melee takedown all the snipers

The last achievement is the challenges. Completing "Getting the drop on them" will require you to dispatch 3 Nazi's with crane drops. Doing this will unlock:

On Yer Head, Son

Kill enemies with 3 different environmental drop kills

The other challenges include:

1. Snow Blind: Do not tag anyone, or anything, with binoculars
2. Surprise, You're Dead: Kill 10 enemies using traps
3. Perfect Payback: Kill a sniper by shooting through his scope. Be sure kill-cam is on when attempting this challenge.
4. Cool Runnings: Complete the mission in under 15 minutes. To do this, ignore all enemies and secondary objectives and complete the main objectives as fast as possible. I suggest stocking medkits in your loadout for tough situations.

Completing this last challenge will unlock:

All Inclusive

Inception - Complete all the challenges