Check out your stats

How did I go from level 5 to max level? You wonder as you open your status screen.

Name: Burning Skeleton
Race: Undead (skeleton)
Level: 10
Hit Points: 50
Mana: 0
Melee Attack: 15
Ranged Attack: 0
Magic Attack: 0
Melee Defense: 5
Ranged Defense: 10
Magic Defense: 5
Special Abilities:
Undead – you are undead, granting you certain bonuses and maluses:
- you take double damage from holy attacks
- most healing effects hurt you instead of healing you
- "negative energy" attacks heal you instead of hurting you
- you are immune to a number of negative effects, such as poison, mind control, fatigue, sleep and paralysis
Skeleton – you are a skeleton, granting you certain bonuses and maluses:
- resistance to piercing attacks – all piercing attacks, such as spears, arrows and some spells, deal 80% less damage
- resistance to blade attacks – slashing and hacking attacks, such as most swords and axes, deal 60% less damage
- vulnerability to bashing attacks – bashing attacks, such as those from clubs, hammers and some spells, deal an extra 80% damage
- immune to some negative effects, such as blind and silence
Genderless – as a skeleton you have no gender and are thus immune to all effects affecting a particular gender
Wreathed in Flames – you are wreathed in flames that cannot be extinguished. Anyone using a melee attack against you takes fire damage equal to "[your level]5 to [your level]10". In addition, you are immune to fire damage and any items in your possession are unaffected by the flames that envelope you
Explosive **** – you explode upon ****, dealing massive fire damage to all enemies within a 10-meter radius

NOTICE!
Max level reached! You will not be able to advance further, or to gain more experience, until you have chosen an advancement path!

Below that is a blinking message saying simply:
Advancement available

Seeing no other choice you select it and a new screen opens.
Advancement options:
Skeletal Warrior – focused on melee combat. High physical attack and average defense. Further advancements include the option to become a mighty undead champion
Skeletal Knight – focused on defense. High Physical Defense, average Physical Attack and Magic Defense. Further advancements include the option to command and lead other undead
Skeletal Archer – focused on ranged attacks. Further advancements include a choice between direct attacks and stealth attacks
Skeletal Mage – focused on Magic – for both attacking and defending. Further advancements include the option to specialize in a particular field of magic
Skeletal Adventurer – a jack-of-all-trades option. Have average stats but also the most advancement options

Well, at least you can't complain about lack of choices...