Contains Spoilers! Read on at your own discretion. 

IMPORTANT NOTE If you purchase the game from the trial version, go to the dashboard, then back to the game, then start a brand new game. This should solve the problem people are having with Hero of Might and Magic glitching

Here is where you should save and then go back and do everything. I managed get this achievement, I did campaign 5 up to top level of the tower.. no spoiler but where your sidekick for campaign 5 stays behind... THEN save and complete anything missed in past campaigns.

You will have to complete:

Main quest objectives

• A battle is a main quest battle if the swords above the enemy's head are golden. 
• A main quest conversation will be recognized by the question mark being golden, and the background it is on being brown.

The side quest objectives are: Noted by silver swords/dialog box

• Puzzle Battles (see Skilled Strategist)
• Bounty Missions (see Bounty Hunter)
• Winning a battle against someone with silver swords over their heads, and usually guard chests with artifacts. This is usually a side quest, sometimes not.
• Getting a special unit, or defeating someone to gain access to it is sometimes a side quest, sometimes not. Check the guide for which ones are.

Side Quests Guide

Irrolan 11 side quests
1. Twigleaf: After you save the druid elder and leave the tree you can go down and to the right. Twigleaf is off the path right when you take a right.

• Level 5
• Unit Levels: NA
• HP: Defeat both trees

2. Sir Nathanson: After you battle Varkas go two steps to the right and there is this guard, guarding a chest.

• Level 8
• Unit Levels: basic – 4/4/4 Elite – 4 Champion --2
• HP: 60

All 4 Puzzle battles
All 5 Bounties

Holy Griffin Empire 13 side quests
1. Defeat Jarvis in the inn:

• Level 6
• Unit levels – basic: 4/4/4 Elite: 4 
• HP:45

2. Defeat Fillion: In the section where you first avoided guards. Shows up after you beat the mission where you have to hit both gate switches at once.

• Level 7
• Unit Levels: basic - 5/5/5 no elite/champion units
• HP: 42

3. Defeat Sir Gerhardt: After you complete the arena, he is to the right of the arena

• Level 8
• Unit Levels: basic – 5/5/5 Champion – 4/4 
• HP: 50

4. Rematch at the arena: After you corner Count Carlyle you can go back to the entrance of the arena and do this.
First Battle:

• Level 7
• Unit Levels: basic – 5/5/5 Elite – 4 Champion 4
• HP: 60

Second Battle:

• Level 8
• Unit Levels: basic – 5/5/5 Elite – 5 Champion 4
• HP: 70

Third Battle:

• Level 9
• Unit Levels: basic – 5/5/5 Elite – 5 Champion 5
• HP: 85 

All 4 Puzzle Battles
All 5 Bounties

Heresh 13 Side Quests
1. Defeat Sir Skeleton: At the beginning of the game after the first 2 battles you can battle him. He is in the area where you first started the campaign

• Level 5
• Unit Levels: basic – 5/5/5
• HP: 38

2. “X marks the spot”: After you beat Sir Skeleton, talk to him and he will say something about treasure and the phrase “X marks the spot”

• Look for a natural formation of an X in the road shape, but if you go to your map it will show you exactly where. HINT: Move 3 steps to the left of Sir Skeleton and hit .

3. Defeat Farnir Greenvine: from the bounty giver go down and left, then up toward a spooky looking building. Farnir is on the left in front of the building.

• Level: 5 
• Unit Levels: basic – 5/5/5 Elite – 3 Champion – 1
• HP: 32

4. Solve Dusty’s riddle: In the catacombs below and to the right of the bounty giver. Once inside the catacombs, just go up.
Answer: 10

5. Defeat Kozmo: In the second catacomb you go into in the story, down and to the left of the entrance.

• Level 4
• Unit Levels: basic – 3/3/3 Elite – 1
• You have to hit Kozmo with a triple link attack to win. So three attack formations of the same color attacking at the same time. I set it up so I could start to charge a ghost, and then on my next turn be able to create 2 zombie attacks. Very easy if you set it up instead of just randomly creating attacks. He does not have many units to set up, so do not worry about losing all your HP. 

6. Defeat Golobulus: After you get past the dragon part of the main quest (you will see what I mean by dragon part when you get there) go to the next area on the right, and in the lower right corner in front of a cave is this man…creature…thing.

• Level 10
• Unit Levels: basic – 5/5/5 Champion – 5/5
• HP: 70

Both Puzzle Battles
All 5 Bounties

Sheogh: 12 side quests
1. Defeat Dirge: Inside the Screaming Hag Inn to the right.

• Level 6
• Unit Levels: basic – 5/5/5 Elite – 5
• HP: 48 

2. Defeat Talnir: After you win your story battle in the Screaming Hag Inn, he shows up below the inn and to the right

• Level 6
• Unit Levels: basic – 3/3/3 Elite – 3/3
• HP: 45

3. Hit Moody and Gut: Right past the Pit Fiend buying shrine, to the North of the Screaming Hag Inn

• Level 7
• Unit Levels: basic – 5/5/5 Elite – 2 Champion – 2
• Just hit the green and yellow demons in battle and you win. I used Succubus’s to maximize my radius of damage. You only have to hit them, not kill them.

4. Defeat Pit Fiend: After the path to the left of the Screaming Hag Inn opens up follow it until you cross 2 bridges. Pit Fiend is on your right.

• Level 9
• Unit Levels: basic – 5/5/5 Champion – 5
• HP: 85

5. Defeat the Bounty Giver: After completing all bounties (could be all for game or campaign, I had both done) talk to the bounty giver and demolish him.

• Level 10
• Unit Levels: basic – 5/5/5 Champion – 5/5
• HP: 100

Both Puzzle Battles
All 5 Bounties

Academy: This is a difficult campaign to explain. I basically went through and did everything that I could find and I am listing it all here. The thing about the last campaign is that it does not have a side quest counter, but I am listing everything I did not main quest related for the achievement.
1. Defeat Guard 1:
Right before getting to the top of the tower someone pops up and sends an enemy your way that gets you Rakshasas. After this battle I went down the tower and found this enemy in the middle, 2 steps to the left of a treasure chest

• Level 8
• Unit Levels: basic – 5/5/5 elite – 5
• HP: 75

2. Defeat Guard 2: eventually you will come to a part with a man with silver swords guarding a cage, defeat him.

• Level 10
• Unit Levels: basic – 5/5/5 elite – 5 champion – 5
• HP: 100

3. Defeat Guard 3: SPOILER: Right after you battle Nadia's father as Aidan you will have a chance to save and whatever before the final boss battle. Once this happens head back from where you came to find this guard right past the cage with the prisoner that you have hopefully freed by now.

• Level 9
• Unit Levels: basic – 5/5/5 elite – 5 champion – 5
• HP: 90

4. Defeat Guard 4: SPOILER: Right after you battle Nadia's father as Aidan you will have a chance to save and whatever before the final boss battle. Once this happens head back from where you came to find this guard right past the cage with the prisoner that you have hopefully freed by now. Once you defeat his guard keep heading down the tower one more section to find this guard.

• Level 8
• Unit Levels: basic – 5/5/5 elite – 5 
• HP: 80

Achievement should unlock after the Epilogue and the credits start

You gain levels online by collecting experience, which you get when you win, but less when you lose. Your winning streak also has a big effect on amount of exp gained per game, but you can get to level 10 by constantly losing games.

You can boost all 3 online achievements. Go to the achievement trading thread HERE to find fellow boosters.

They they can all be done without boosting.

See Team Player achievement description for tips.

Just win one battle. This achievement also unlocks if your opponent quits out once the match begins.

See Team Player achievement description for tips.

This is throughout the entire game, over the course of the 5 campaigns, not just one campaign.

See THIS thread for the bounty quest guide.

Helpful hint You can find the exact location of a bounty that you are in the area of by going to your map, scrolling down to your bounty, and looking for a hi-lighted bag with a dollar sign on it. You can only see the exact locations of bounties you are in the area of.

In each campaign you will have the following units:

• 3 basic units (1 block by 1 block in size)
• 2 elite units (1 block by 2 blocks in size)
• 2 Champion units (2 blocks by blocks in size)
• 1 Special Unit

Guide for Special Units:

Irollan: 
Unicorn – next to the entrance to the Druid tree on the right is an elf who talks about unicorns. Once you beat him (I beat him at lvl 8, he is pretty tough) enter the cave and you will find some reward chests and a unicorn buying station. Buy one!!! Now!!

Holy Griffin Empire: 
Sword Master – Sir Randy is in the area to the east of the arena in the upper right corner guarding a statue. once you beat Sir Randy you can go into the newly formed passage behind him and there is a buying station. Buy one. 

Sir Randy: In the area to the right of the arena in the upper right corner

• Level 7
• Unit Levels: basic – 5/5/5 Elite – 5 Champion – 1
• HP: 58

Heresh: 
Wraith – Once you beat Golobulus head into the cave behind him and the wraith buying station is to the right of Urolox the demon.

Golobulus: After you get past the dragon part of the main quest (you will see what I mean by dragon part when you get there) go to the next area on the right, and in the lower right corner in front of a cave is this man…creature…thing.

• Level 10
• Unit Levels: basic – 5/5/5 Champion – 5/5
• HP: 70

Sheogh: 
Sorcerer – Go North of the Screaming Hag Inn and continue up the path until you reach the bridge. Go across the bridge and then down to a cave entrance. Once you defeat the demon guarding the entrance, the buying station is right inside.

Demon Guard:

• Level 7
• Unit Levels: basic – 5/5/5 Elite – 4/4
• HP: 60

Academy: 
Pheonix -- Eventually you will come to a part with a man with silver swords guarding a cage, defeat him and you will unlock this unit.

Guard:

• Level 10
• Unit Levels: basic – 5/5/5 elite – 5 champion – 5
• HP: 100

See Sir-Links-a-Lot achievement description for a step by step guide.

General Tips

• Artifacts are usually found in treasure chests or given after you complete all of the puzzles someone can give you.
• Sometimes the artifacts are guarded, so if you see a treasure chest with someone standing next to it with silver swords over their head, it is probably an artifact

Go HERE for the in depth artifact guide.

At the end of the Holy Griffin Empire campaign I had 2 special units at level 5, one at 4, one at 3, and one at 2, as well as all basic units at level 5. Then I went to the Sword Master buying station (far right area, upper right corner, behind Sir Randy in a statue) to level up, enemies attack as you walk around. The enemies are around level 8, but net 450 exp and about 1000 gold. 

Also where you have to dodge guards in the alleys at the beginning of the game, below the inn. If you go back the guards are level 5-6 and net you about 280-315 exp, and are much easier and quicker to defeat. It takes me about 2-4 minutes each time. Here is the setup I found most effective:

• Basic Units: All spearmen (once all basic units are at level 5)
• Artifact: Golden Spear
• Elite/Champion Units: whatever you need to level up

Basically build as many spearmen as you can first turn, second and third turn focus on fusing spearmen formations. There usually isn’t a fourth turn, but rinse and repeat if necessary.

I like the second method better (thanks for the suggestion Mow), but some people might prefer the first method 

The Sylvan campaign is the first campaign you do, so this should be the first campaign achievement you unlock. Tutorial does not count.

Note: If you do not have a second controller you can boost these online as well

Plug in a second controller, and from the main menu go to multiplayer>offline. For your character pick Godric and for his soldiers pick any combination of spearsman and swordsman, no elite or champion units. For the second controller pick anything.

When the game starts evaluate your troops. See which troop color (soldiers and spearman) you have the most of. Now you will be going for Sir-Links-a-Lot first. Try to get a column (up and down) of units in this order if say you have a lot of white (front to back). White-Yellow-White-White. Or flipped with 2 Whites, then a yellow, then a white. You should have 1, 2, or 3 of these already made from the start if you are lucky.

Now the most important thing to remember is to not make walls on accident. To avoid this you can do two columns of the formation, then a blank column, two more, a blank column, then the last column of this pattern. You probably will not have 15 of one color unit to start with, but that is fine. Delete all other units that you do not need and eventually re-enforcements will bring a unit color you need. When it is the second controller’s turn, just end your turn (x) or delete 3 units (for fun). Eventually you will have 5 patterns like the one I described earlier set up, when this happens, delete the unit in the center (in this case the yellow) and repeat for the other 4. Be carefully to not get trigger happy and delete a White one like I did, because then it is time to retry. After all 5 of them link the achievement should unlock.

Now for Fusion Fanatic, the reason you have swordsman and spearman is because they have a charge time of 3 turns, plenty of time for 2 fusions. First get 9 of the same color units so that you can easily move them without moving other units. Delete an entire column of units and put an attack formation of the color you have 9 units of. On your next turn put 3 more behind the attack formation, and then repeat on your next turn. Once your 2nd fusion takes place, the achievement will pop. You can do this in the same game as Sir-Links-a-Lot.

Battle Puzzles are battles where you are given one turn (3 moves) and you have to kill all of the enemy units. For every single puzzle you will need more than 3 moves, so combos are your best friend.

HERE is the Battle Puzzle guide.

Simple, win a game in 2 vs. 2 online multiplayer. 

All online achievements can be booster, check the achievement trading thread HERE for fellow boosters.

Setup that should be used for boosting:

• Player 1 (loser)
• Hero: Fiona
• Core Units: any assortment you want, you will be deleting them anyway
• Elite/Champion Units: Pick any 2 champion units. They take up more space and you can delete 4 spaces quickly.
• Artifact: Spider Cloak

Player 2 (winner)

• Hero: Anwen
• Core Units: Archers
• Elite: Druids and Unicorns
• Artifact: doesn't matter

The point of this setup is that Player 1 will only have 25 health and Player 2 will attack fast. Player 1 should delete as many units as possible in whatever columns Player 2 tells him/her. This makes it so Player 2 can attack quickly, and efficiently. This should maybe take 3 turns if you get lucky from the start.

After Player 2 wins, play the same game over and over until Player 2 reaches level 8 or so, then switch. This way Player 2 gets to 8 fast due to his/her streak of wins. Then switch and boost Player 1's level to 10. Player 2's level should raise from 8 to 10 helping Player 1, but if it doesn't just do some cleanup games.

Thread for online strategies with tips HERE