Overview:
-Estimated achievement difficulty: 5/10
-Offline: 43 (1000)
-Online: 0 (0)
-Approximate amount of time to 1000: 20 Hours
-Minimum number of playthroughs needed: 1 but multiple replaying of missions needed for rank 5.
-Number of missable achievements: 0 (Some achievements require ability points. There are more abilities than points. You can reset points with cost of a level).
-Do cheat codes disable achievements? No Cheats
-Does difficulty affect achievements? Yes. 'Tough as Nails' achievement requires Hard Mode but you could play on Versus instead for a possibly easier time.
-Glitchy achievements: No
-Unobtainable achievements: None
-Extra equipment needed? None
Introduction
Right away you need to know to play all your games on Versus or Hard to get the 'Tough as Nails' achievement. Just play all campaign missions this way to assure your 1000 comes without worry of multiple play-throughs. There is no way to check what levels you have played on what difficulty, or if you beat them on Versus or not. So to be safe, just play on Versus when doing campaign. If just going for XP, you can play with Easy bots in freeplay. Also, do not do the three star challenges until you have gotten every other achievement. Do the other ones to gain the unlockables and for free starter XP. Case in point, do the 1 and 2 star challenges before playing. As you level, the bots get harder for the mentioned challenges. You can create up to 10 characters, so just create a new one after you finish the game to grab the challenge oriented achievements.
Achievements can be earned in private matches or freeplay as well but not during challenges. Considering this, boosting certain things are possible. Go HERE to find boosting partners.
Step 1: Campaign on Versus Mode (or Solo Hard)
Before playing do all of the challenges from the main menu that give unlockables. That would be all 1 and 2 star challenges. Afterwards start Versus mode. It is important you play on Versus mode from the start of the campaign if you want the easiest time. This gives you more XP, ensures you unlock the needed Audio Logs, and potentially will make your campaign run faster. If you join in the middle of a match and win, for example, you'll still get credit but have only played half of it. You will unlock many achievements playing normally as the various classes. An extremely good class to play disregarding achievements is the Engineer. They can build turrets and place mines near Objective points to make it difficult for the opposing team. The turrets can earn you XP, boosting teammate gun damage, completing repair based objectives, etc. They seem to have the most things to do and can upgrade Command Posts. They are very defensive (repairing, removing hack boxes, and disarming HE charges). Many missions require you to defend until time runs out. This class makes that happen a lot easier.
Favorite Weapon: Kross SMG (Muzzle Brake, Front Grip, Yeotek Red Dot, SMG Drum Magazine). Some people complain there is too much recoil in this game. Using this weapon you will experience almost no recoil at all.
Step 2: Misc. Achievements and Rank 5
If you haven't been focusing much on achievements while playing campaign missions, go ahead and finish them off here while trying to earn 300,000 XP to reach rank 5 (level 20). Always play online modes even if private to get the extra 20%. This will make leveling much faster.
Step 3: Challenges
Create a new character to play the three star challenges with. Playing as a level 20 will be extremely frustrating because of the AI on your team not helping. Since it is a new character you will have to play all of the 1 and 2 star challenges over again, but it's worth it doing it all in this order. Once you ave completed them, you will have completed the game.
Step 4: Agents of Change DLC
You should start by completing the 2 new missions that are introduced in this DLC. You need to complete them both as the 2 different factions, meaning you need to complete 4 missions for the first 2 achievements, 'Science Maven' and 'Towering Achievement.'
Step 5: Agents of Change DLC
There are 3 achievements to obtain for killing an enemy with a certain piece of equipment and 1 for healing 3 people at once. You need to be rank 5 to be able to unlock all of these. You should work on trying to unlock these while playing through the 2 new missions, but if you don't unlock them whilst playing through the new missions, you can go back and choose any mission, even from the original game and unlock them there.
Step 6: Agents of Change DLC
The final achievement to unlock is for getting to level 24. The highest level originally was level 20, so you only need 4 more levels which shouldn't take too long. You will have gotten to level 24 by the time you have unlocked all of the other achievements.
Conclusion
The game's achievements overall are straightforward and easy. There can be some frustration with the game because of bot AI and also lag when playing online. There is nothing else to really do after gaining all achievements except wait for DLC which will most likely raise thel level cap. Because of the nature of this type of game, updates are also to be expected.
If you're looking for a guide that seperates achievements based on story, class, etc, then feel free to head over to this guide HERE made by Xx Overkill VR
[x360a would like to thank Tyger7 and Scotty for this Roadmap]