Kainie

Off to a good start

Beat the AI on "Beginner"

Taking it easy

Beat the AI on "Easy"

Medium

Beat the AI on "Medium"

Harder than it sounds

Beat the AI on "Hard"

What's Harder than Hard?

Beat the AI on "Harder"

Insane (potential future World-Champion)

Beat the AI on "Hardest"

White always wins.

Win as White at least 19.84 times.

Perfect Balance

Tie a game

Flipping out

World Wide Othello

Win your first online match

On a Roll

Win 3 games in a row, online

Go easy on 'em

Win 5 games in a row, online

Seriously?

Win 10 games in a row, online

Tough Love

Win 15 games in a row, online

Nobody is Perfect

Lose an online game

Mortal Conflict

Win your first game against a human opponent

Mess with the Best

Beat a player who has the 'Insane' achievement

Flip-Six

Flip six tiles in one move.

Flip-Twelve

Flip twelve tiles in one move.

Flip-Eighteen

Flip eighteen tiles in one move.