Death at negative CON
Bonus spells for wizard intelligence (same as cleric)
We didn't use weapon speed, length, but did oftentimes use AC modifiers by weapon.
20 Critical (double damage), 1 (drop weapon out of reach or can break the weapon to do a critical).
Hero Points (From dragon #118)
Initiative was per side
We never used the Grapple or complex pummeling stuff--in reality this was also an issue with the TOP SECRET hth combat that really got bogged down in terrible game design (even for then!)
Not used: Training
Wildcard wizard/Ill spells: you could do one per level.
Weapon proficiencies weren't really ever use as with most of the stuff from Unearthed ARcana (except spells).
Monk from Dragon magazine
Just prior to the release of 2e, there were a lot of things happening..then with 2e, it all changed again--especially with all those splat books!