Defeating Brogar - Brogar's single strike can deplete your health quickly during the early part of the game. Before fighting him, learn the Counterattack skill from Craig (level 2 in sword). Place a bet with Craig, and challenge him in the arena. During the fight, press [Counterattack] repeatedly. He will have no chance of hurting you, and will keep losing health. When he is down, you can take his weapon, money, potion, and a piece of the golden sword (which is a part of the quest).

Defeating Lizards - To defeat Lizard Elites and Lizard Warriors when they appear in a group easier, draw your bow and hit one of them. Leave that location, and make sure they are following you. Go to an area with men, and they will help you kill them.

Easy kills - Find a trap (for example, spikes, smashing doors, or opening floors). Use your crossbow to zoom in on the other side, and attract any enemies. Beasts and lizard warriors can be easily killed with the trap in between.

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Field hand (10 points): 10 grain plants collected.
Philanthropist (10 points): "Rescue Sara from the wilderness" completed.
Samaritan (20 points): "Medicine for everyone" completed.
Peacekeeper (30 points): "Peace and order" completed.
Fence (30 points): "A package for the Don" completed.
Ladies' man (10 points): "Woman beater" completed.
Sidelined (20 points): "Power struggle" completed.
The merciful one (10 points): The farmer's sick wife completed.
Wise man (20 points): "The test of Master Ignatius" completed.
Family man (20 points): "The sons of Tilda" completed.
Archaeologist (20 points): "The mystery of the eastern temple" completed.
Little hero (20 points): "Where is Patty?" completed.
Rune master (20 points): "The fourth seal of rune magic" completed.
Ghost hunter (20 points): "Find all the vassal rings" completed.
Beginner (10 points): First monster killed.
The brave little tailor (10 points): Seven grave moths killed.
Ferocious wild boars (10 points): 20 wild boars killed.
Terror of the hens (10 points): 20 chickens killed.
Beast slayer (30 points): 500 monsters killed.
Big game hunter (50 points): 2000 monsters killed.
Ogre friend (10 points): Rescued the ogre, Drok.
Hard worker (50 points): 250 quests completed.
Expert (20 points): 100% achieved in an attribute.
Workaholic (20 points): Every profession learned.
Mage (20 points): All crystals learned.
Gladiator (20 points): Every close combat talent learned.
Sharpshooter (20 points): Every ranged combat talent learned.
Master of the classes (30 points): 100 % achieved in three attributes.
Fervent swimmer (10 points): Caught by the tideworm 10 times.
The fourth triplet (10 points): 10 treasures found.
Idiot (10 points): Fell to death 3 times.
Jester (10 points): 25 Jest spells used.
Safecracker (10 points): 100 locks picked.
Weaponsmith (10 points): 100 weapons forged.
Master thief (10 points): 50 pockets picked.
Well-to-do (10 points): 1.000 gold coins obtained.
Moneybags (30 points): 100,000 gold coins obtained.
King Midas (50 points): 300,000 gold coins obtained.
Adventurer (10 points): Found way out of the first ruin.
Map reader (10 points): Found first map in the game.
Archer (10 points): Found first bow.
King of the handymen (20 points): 20 tool bags collected in inventory.

Additionally, there are eight secret achievements:

Master Detective (20 points): "Find Hemlar's Murderer" completed.
Death of a Legend (20 points): "The Legend of the Gyrger" completed.
Defender (20 points): "Secure the Volcano Keep" completed.
Freedom Fighter (20 points): "Esteban's Return to Harbour Town" completed.
Pandora's Box (20 points): "The Titan Trap" completed.
The Traveler (20 points): "Find All the Teleport Stones" completed.
Showdown (50 points): "The Inquisitor is Dead!" completed.
Titan Lord (50 points): "Defeat the Titan!" completed.