Mass Effect

Taking the top spot in most of the scenarios isn't terribly hard. It helps if you have a higher level character saved, though, as the last five scenarios offer a little more challenge than the first eight.

General tips:

All the maps are the same, regardless of which scenarios you pick. So if you're doing a Survival mission on Tropical, the map layout will be the same for Capture on Tropical. Once you play the maps once, you'll have a good idea of where to find cover and where enemies are likeliest to spawn.

Before you start the scenarios, you can check the best times on computers scattered about the station.

You may or may not place first on your initial attempts. No problem, as you can select "replay" afterwards. Sometimes failing a mission is a good thing, as you will learn everything about the map and scenario in your first try, making replay much easier. Of the thirteen total challenges, I only had to replay two of them to get first place.

Pick a good team to help you. I chose one that was more combat-oriented (Ashley and Garrus) for all the scenarios, because even the Capture challenges require some firepower...gotta keep the enemies off your backs while you're capturing the points.

Don't forget to use Sprint to move quickly, especially in the Timed and Capture scenarios. Be wary of using it too much and fatiguing yourself.

Survival challenges are just that: survive wave after wave of enemies. Find a good spot to defend and hold out. The record times for the Survival modes are less than 2 minutes, so you don't have to go for long. Once you're past the record score, you can just let the enemies kill you, unless you want to see how long you can hold out (I was at 16 minutes on Tropical before I got bored and allowed them to kill me).

After completing the first eight challenges, you unlock the last four, which are a little more difficult, but manageable. The only one that offered a more significant challenge was the Survival scenario, which pits you against large numbers of high-powered Geth. More challenging, to be sure, but I still beat the record time easily. Again, pick good teammates.

Once the initial twelve are done, you get this achievement. The final challenge (for the final achievement) is then unlocked, and there's a good guide for it on this site that I recommend. It helped a lot.

Sorry this was so long. I believe in being thorough.

Best of luck!

Alright so heres a quick guide and a list of all scenarios you need to finish to obtain this achievement but a big note to start with..

*This achievement is just to beat all top scores in each of the scenarios and maps so heres the scenarios and a list of the maps needed for this.

-Hunt:
1. Subterranean
2. Volcanic
3. [2nd Set] Tropical

-Timed:
1. Tropical
2. Warehouse
3. [2nd Set] Volcanic

-Capture:
1. Tropical
2. Volcanic
3. [2nd Set] Subterranean

-Survival:
1. Tropical
2. Volcanic
3. [2nd Set] Subterranean

**You should Leave this until you have leveled to at least 15**

I wouldn't say this achievement was hard but the last 4 scenarios can be a little harder than the first 8 you have to finish.

My advice is to get the two squad members your going to use, to have what they need for the scenarios and you have to make little or a lot of use with your Marksman ability (through the handgun) or any other ability you have for the other guns you wish to use as this will help out a lot :)

You can get to Pinnacle Station from the Normandy!

I really hope this is helpful and Good luck :)
Sorry for any spelling errors i may have made

**These are some hints to achieve the tropical hunt in Insanity difficulty setting.**
English is not my native language, I speak French so please accept some errors of translation

In my opinion and many others', the tropical hunt is the most difficult mission of the dlc, especially in insanity. I spent almost 2 hours on this mission, trying everything I could and I finally found the way.

MY TEAM :
It's only an indication. I think you can do this mission with other allies/equipment.
- Soldier Shepard lv 59, specialized in assault rifle
- Wrex lv 59, auto-leveled
- Ashley lv 59, auto-leveled
- All my team's weapons were Spectre X and all the upgrades for all the weapons were Cooling Upgrades X, Barrel Upgrades X and Inferno X ammo. With these upgrades, weapons never overheated.
- Armors were all lv X, the best I got from the playthrough, but that's not the most important. Armor upgrades were for Shepard : Damage Protection X and Shield X, for teammates : 2 Medical Exoskeleton X

The biggest problems in this mission :
1) Enemies spawn randomly
2) Weakest Geths use energy shields and Shepard is always taking covers behind them if you run into them
3) Destroyer Geths take an enorm amount of time to be killed

HOWEVER THERE IS A WAY TO GET RID OF THESE :
I don't know if we can call it a glitch or a bug, but I figured out that when you kick an enemy and it falls on the bridge's fences on the left and on the right from where you start the mission, he is insta-killed.

MISSION GUIDELINE :
- Once the mission starts, take the path on the bridge on the right, then run to the circular platform on the left. Here kill the one or two enemies tha spawned meanwhile.
- Send your 2 allies in the river downstairs as long as you can aim from the platform. Don't go downstair. Your allies will look after the enemies in the river area.
- You have to care about the enemies on the platform and on the 2 bridges.
- To quickly kill the enemies on he platform, turn around them and keep firing. They will use their shield, but you won't be blocked by it.
- To quickly kill the enemies on the bridges, the Geth has to be between you and the fence. Then melee him. He will be killed.
- This technic is extremelly useful with the Destroyer Geths, but you have to kick them three times to lower their shield.
- If the Destroyers don't spawn on the bridges, attract them by shooting at them.
- It is preferable, I think, to run and use the melee than to shoot from a middle distance.

Note :
Using these hints I tried about ten times before getting the 51 frags needed (actually I got 55 kills). My lower score was 45, I reached 50 three times. When I got the 55 frags, in the beginning of the fight, 2 Fighter Geths and one Destroyer Geth spawned at the same place on the bridge, so I counted 3 kills in 6 seconds, with three kicks. I gained about 30 seconds. So it question of luck and random.
Don't give up you'll finish to reach the goal.