Knights Contract

There are two strategies to beating this boss (at least there were two that I used).

The first strategy is to get up close to Trendula, avoiding her lightning attacks and punches (watch out because these can knock you off the platform). When she slams down her fist run up to it and press A once you see the prompt near her health bar, this will allow you to jump on top of it. Now that you are on top of Trendula's arm run to her head and attack it using your heavy attack (Y button), this will do a large amount of damage (almost an entire bar). Rinse and repeat.

The second strategy and the safest is to stand back on one of the further back bridges and just throw your lance at her. This will take a bit longer but it will get the job done.

One last thing, sometimes Trendula will warp to a new location and if you are unlucky she can grab you. This is easy to escape (you just need to mash the button that appears) but it is possible for her to drag you far away from Gretchen. If it takes you too long to get back to her she will get captured and eventually die.

Once Trendula's health is reduced to zero her QTE sequence is: Y, A, Left stick up, X and mash B.

Hope this helps and have fun!

These are the QTE for all the bosses I hope this helps!

--Thanks to thegameguru2 on x360 for making the list!

Straeggele - A, LS (mash left and right), A, LS (up), Y(Mash)
Trude - LS(down), Y, X (mash), B
Holda - A, LS(left), LS(right), LS(up), B(mash, Y
Trendula - Y, A, LS(up), X, B(mash)
Rapunzel - B, X, LS(right), RB, Y
Verderinde - Y, RB, B (mash), LS (RIght)
Faust (first form) - LS(right). B
Faust (second form) - Y, RB, A, LS(left), Y, X(mash), LS(down)
Verderinde Final (first form) - B(mash), LS(up), Y
Verderinde Final (second form) - LS(left), X,Y,B

LS = Left stick

As you as you get control, run straight ahead across the bridge in front of you and enter the enclosed tower at the end of the bridge. Trendula cannot hurt you while you are inside this tower at all. Occasionally she will cast an attack that knocks you off your feet, but it doesn't hurt you.

Now, there are three doors leading out of the tower. Equip Maar's Spear and wait for Trendula to teleport somewhere (you'll know she did when the camera angle moves). As soon as the camera moves, run out onto one of the bridges. As soon as Trendula appears, lock onto her head (you may have to switch targets while locked on) and throw the spear at her head. This will knock off about 1/4 to 1/3 of a health bar. Then just run back into the tower and let your Maar's Spear recharge. Rinse and repeat until you get the QTE.

Also, take care because after taking about half damage (or so) Trendula will grab the middle bridge and tear it off. If you're on it, it's game over. I just stuck to the left and right bridges.

Note: You may want to pick Gretchen up while waiting inside the tower. Her worthless ass tends to wander outside if you don't and she will get snatched up by Trendula and end up A LONG way away, and will usually die before you can get there.

The QTE for this boss is: Y, A, LS up, X, B(mash)