Wanderlust: Rebirth is an online 4 player co-op retro arcade-action RPG. Wanderlust: Rebirth offers more content than most professionally-funded games including story and survival modes, online high-scores, over 40 enemies types, 15 boss battles (including 4 secret bosses), over 50 unique skills between 4 uniquely crafted character classes, 3 different difficulty modes, 3 different endings, AND MUCH MUCH MORE!
The is the new "Battle Tactics" skill that the Fighter starts with. If an enemy is defended 3 times, they become a target for the Fighter, which grants damage bonuses to the player and also makes it so the enemy will miss their next successful attack on the player (which then removes the targeted status).
*cough* Linux version?