No missable achievements (plus 14 unknown)
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Kill 100 enemies.
Bring back to life 1 Orc warrior killed in combat.
Win a multiplayer mission (local or online).
Kill 1000 enemies.
Reach experience Level 15.
Complete a level without taking any damage.
Prevent Master Muck from taking any damage in one of the escort levels.
Collect 300 coins in one combat level.
Hit 1000 enemies without being touched by them.
Kill the Mad Man.
Wear all the hats, helmets and masks.
Collect all the Black Stones.
Kill the Mad Man in Nightmare mode.
Jump on the shoulders of a teammate without scrolling over a meter and do a full level on piggyback.