There is no guide for this game yet. But apparently it is EASY POINTS! 

Free all the pigeons - 30 points

Open all the pigeon cages in the game to unlock this achievement.

All upgrades purchased - 20 points

Purchase all the combat upgrades to unlock this achievement.

All glue found - 30 points

Find all the glue to unlock this achievement.

All magnesia found - 30 points

Find all the magnesia to unlock this achievement.

All shields found - 30 points

Find all the shields to unlock this achievement.

50000 Helmets found - 50 points

Collect 50000 Helmets to unlock this achievement.

100000 Helmets found - 100 points

Collect 100000 Helmets to unlock this achievement.

50 combo hits achieved - 50 points

Increase your combo hit counter to 50 to unlock this achievement.

100 combo hits achieved - 100 points

Increase your combo hit counter to 100 to unlock this achievement.

Adventure Mode 10% complete - 5 points

Complete 10% of Adventure Mode to unlock this achievement.

Adventure Mode 20% complete - 10 points

Complete 20% of Adventure Mode to unlock this achievement.

Adventure Mode 30% complete - 15 points

Complete 30% of Adventure Mode to unlock this achievement.

Adventure Mode 40% complete - 20 points

Complete 40% of Adventure Mode to unlock this achievement.

Adventure Mode 50% complete - 25 points

Complete 50% of Adventure Mode to unlock this achievement.

Adventure Mode 60% complete - 30 points

Complete 60% of Adventure Mode to unlock this achievement.

Adventure Mode 70% complete - 35 points

Complete 70% of Adventure Mode to unlock this achievement.

Adventure Mode 80% complete - 40 points

Complete 80% of Adventure Mode to unlock this achievement.

Adventure Mode 90% complete - 45 points

Complete 90% of Adventure Mode to unlock this achievement.

Adventure Mode 100% complete - 65 points

Complete 100% of Adventure Mode to unlock this achievement.

Long Jump Winner (Medium) - 10 points

Win the long jump event in Olympic Mode on Medium difficulty to unlock this achievement.

Foot Race Winner (Medium) - 10 points

Win the foot race event in Olympic Mode on Medium difficulty to unlock this achievement.

Tug of War Winner (Medium) - 10 points

Win the tug of war event in Olympic Mode on Medium difficulty to unlock this achievement.

Toadball Winner (Medium) - 10 points

Win the toadball event in Olympic Mode on Medium difficulty to unlock this achievement.

King of Arena Winner (Medium) - 10 points

Win the king of the arena event in Olympic Mode on Medium difficulty to unlock this achievement.

Hammer Throwing Winner (Medium) - 10 points

Win the hammer throwing event in Olympic Mode on Medium difficulty to unlock this achievement.

Javelin Winner (Medium) - 10 points

Win the javelin event in Olympic Mode on Medium difficulty to unlock this achievement.

Romanophone Winner (Medium) - 10 points

Win the romanophone event in Olympic Mode on Medium difficulty to unlock this achievement.

Chariot Race Winner (Medium) - 10 points

Win the chariot race event in Olympic Mode on Medium difficulty to unlock this achievement.

Long Jump Winner (High) - 20 points

Win the long jump event in Olympic Mode on High difficulty to unlock this achievement.

Foot Race Winner (High) - 20 points

Win the foot race event in Olympic Mode on High difficulty to unlock this achievement.

Tug of War Winner (High) - 20 points

Win the tug of war event in Olympic Mode on High difficulty to unlock this achievement.

Toadball Winner (High) - 20 points

Win the toadball event in Olympic Mode on High difficulty to unlock this achievement.

King of the Arena Winner (High) - 20 points

Win the king of the arena event in Olympic Mode on High difficulty to unlock this achievement.

Hammer Throwing Winner (High) - 20 points

Win the hammer throwing event in Olympic Mode on High difficulty to unlock this achievement.

Javelin Winner (High) - 20 points

Win the javelin event in Olympic Mode on High difficulty to unlock this achievement.

Romanophone Winner (High) - 20 points

Win the romanophone event in Olympic Mode on High difficulty to unlock this achievement.

Chariot Race Winner (High) - 20 points

Win the chariot race event in Olympic Mode on High difficulty to unlock this achievement.