Boss Fight: Hell Guard(s)

This is a boss fight divided into two phases. In the first phase you're up against only one Hell Guard, but it has a protective shield around it nearly all of the time, except when it is attacking. The shield is impenetrable, so don't waste your ammunition on it. I the second phase you're up against two more Hell Knights, but this time they don't have protective shields, so you can continue attacking at will - except, they do too! Equip the Vacuum Rune to absorb dropped pickups from the boss(es) faster.

Let's go over the attacks the first Hell Guard has:

Club Slam: This isn't a summer smash hit, but it's definitely a smash. The Hell Guard tries to club you to death, sometimes jumping at you from medium distances. It's shield will be donw shortly afterwards, so try and get a lock-on with your rocket launcher beforehand.

Energy Balls: This attach takes a few seconds to charge, after which three energy balls are hurled in your direction. Although you can double jump over them, shooting the energy balls to stun the Hell Knight.

Throw: It can throw a weapon at you. Stay on the move.

Three Fire Beams: These are fired in rapid succession at you and cause massive damage. Get behind the boss as much as possible to avoid this attack.

Flamethrower Spin: The Hell Guard will spin while spewing flames. Move along with the flames to avoid getting hit, then hit the Hell Guard with something powerful like a charged Gauss Cannon when it stops spinning. If you don't, the attack continues in the opposite direction.

Energy Blast: This is only used when facing the two Hell Guards. It's possible to dodge the ball by moving sidestepping, but it's better to stun the Hell Guard by shooting at the Energy Ball (instead of the Guard).

Spin Attack: The Hell Guard starts spinning in your direction, causing damage. Try to quickly move away. If you get hit/stuck anyway, hit the Guard with the Super Shotgun to get some damage in and possibly stun it. If that happens, continue to repeatedly shoot it.

Beam: A simple energy beam released from its arm. Sidestep to avoid.

Leap Smash: Smashes you from a distance.

Team Attack: The Hell Guards team up and prepare an energy ball. The one on the ground, with the staff, can and should be damaged a lot in order to cancel the attack, which causes loads of damage otherwise.