Crystal Guardian

Attacks
Shoots energy beams from its arms, in the direction of the player.

Calls down multiple energy beams from the sky that aim diagonally.

Deals damage on contact.

Tactics
This is a difficult boss to defeat, mostly due to difficulty in finding a safe spot. Your best plan is to slash at the Guardian a few times and then get distance to avoid the beam from its arms. The beams from above have very little warning as to where they appear so, just keep moving is your best bet with those.

In short, slash at it whenever you see an opening, and move the rest of the time. Of course, you could always just face-tank its attacks with Joni's Blessing, Lifeblood Heart/Lifeblood Core, Quick Slash, Steady Body, and Stalwart Shell.

Second Encounter
He appears in the room above the bench where he was first defeated, where the lasers he summons and his own beam all deal double the damage as before. He has the same attacks as before, but is more aggressive.



Tactics
There are no safe spots in the boss room, however when standing on the far right of the room, most of the beams from above wont hit you, so you only really have to watch for his beam attack. When he jumps close, he tends to shoot backwards so it is easy to land 3-5 hits each times.

Trivia

 * The Crystal Guardian is fought twice, unlike most other bosses. The first time after you beat it it jumps away, the second time is when you actually kill it.
 * The first time it is encountered, it is seen sitting on a Bench. And when you die, it sleeps on the bench until you kill your Shade.
 * The Crystal Guardian's battle theme is a remix of Crystal Peak's theme.