The Castle

The Castle is a portion of the castle not seen in the main game. You start out in a tower with a couple barrels with ammo and a herb in them. Now, you're gonna leave and go up some stairs do NOT get that Time Addition you see as it'll cause a Garrador to appear sooner rather than later. Anyways, the area is crawling with Zealots. Your best bet is to fight off the first wave or so of Zealots then head up the stairs near the door to the next area to get a Time Addition. From here just fight your way up the stairs through the door and out through the second door. There's a treasure chest with a Point Add power up if you like. Kill off some Zealots then head to the previous room and go up the stairs. Fight your way until you reach a large door, do NOT go inside it as there're two Garradors. Raid the area for Time Additions then hole yourself up anywhere you can that isn't in range of the Bowgunners and fight until you run out of time.

Leon:

Leon is somewhat better equipped for the Castle. The Garradors are easily handled with the Riot Gun and there's less room for Leon to get trapped so you'll find it easier to decimate the enemies that come your way. You still have to be careful and once you have enough points ensure you're somewhere that enemies can't reach you so easily. Also do NOT engage any Garradors unless you have to.

Ada:

Ada is an extremely poor match for the castle. The enemies here are stronger and come in larger waves and the Garradors aren't much help either. Your best bet for Ada is to keep moving and to not allow her to get pinned down. If you do get pinned down you're more than likely going to be killed. Keep out of range of the normal Zealots and try to keep the Bowgunners from spotting you as they're more dangerous to Ada than to any of the male characters.

Krauser:

Again, Krauser has nothing to worry about. His bow decimates everything and his arm even kills Garradors in one blow. Just ensure you don't get cornered without any power for the arm and there's absolutely nothing to fear.

Hunk:

Hunk is a bad combination for this level. He can take on scads of Zealots no problem but as soon as you see a Garrador you're pretty much fucked. That being said your strategy should be similar to Ada's. Don't let yourself get cornered and be very, very careful about the Bowgunners. Thats about all there is to it, you shouldn't have TOO much trouble.

Wesker:

As you might expect, this level is pretty easy for Wesker as well. His Killer7 can take down Garradors in a single shot and his handgun is handy as well. Basic strategy of keeping him moving and racking up combos and you'll have no trouble. Don't be afraid to use his grenades if you get into a tight spot.