I'm sure ideas similar to this have been posted, so apologies for not having read through the whole tread. I just get excited with ideas and feel like sharing them as soon as I can.
The Buckler
Shield-Type Gorefast designed to offer limited bullet absorption from the front. "Bucklers" will try their best to face where ever most of their fire is coming from and can absorb most damage with 100% resistance but only to a point. Once this point has been reached the Buckler will fall to his back and can even lose his shield and shield arm. Behind the shield, "Bucklers" would be identical to a normal Gorefast but slower and deal less damage use a smaller blade. If a "Buckler" were to close in on a player, he would begin a short charge, knocking down the player for a very short time and possibly exposing them to danger. "Bucklers" would remain vulnerable to fire and electric weaponry but Berserkers would be able to exploit and kill Bucklers faster than almost any other perk with the use of melee weapons. Melee attacks, especially heavy attacks from a Pulverizer would destroy their shield but leave the specimen alive, albeit stunned and near death. As an added incentive for Berserkers to engage Bucklers, the shield could explode and increase the area of effect of a Pulveriser heavy attack, damaging other specimens over a larger radius.
The Bolter
Basically an electric version of the Husk. While a Husk would focus on dealing fire damage over time and creating panic with waves of flames amidst players, a Bolter would generally be more effective over range. With the ability to fire bolts of electricity, his attacks would basically be hitscan attacks, perhaps with a lower percentage to successfully connect against a moving target. Attacks would deal mild instant damage with no damage over time, but could temporarily disable a player for 1 second and slow them considerably while completely ignoring armor. The Bolter could respond to closing players with a AoE Shockwave that would deal light damage but, like the Buckler's Charge, knock players down for a second or two before being able to fire or move again. Additionally, the bolters attacks, whether a bolt of electricity or an AoE Shockwave, any electrical light source within a 3 meter radius of the bolt or Shockwave would be permanently destroyed. The Bolter would however, emit his own feint glow and when using his abilities, would randomly cause some lights, even destroyed ones, to flicker again before being blown out.
Nightmare
I tried to think up a 3rd specimen that could accompany, or even randomly replace Fleshpounds during their waves (50/50 chance?). Basically the Nightmare would be an enhanced version of the Siren with the speed and durability (almost) of a Fleshpound and attack of a Gorefast. A female specimen robed in a bloodied gown with broken metal restraints on her arms, legs, and head giving her a significant amount of armor. She could use broken metal chains attached to her arm restrains to lacerate players from greater distances. Her chains could reach all around her, perhaps in a 6 meter radius, with each impact dealing damage roughly on par with a Gorefast. Due to her range however, she could strike multiple players at once. She would also attack while on the move, even far behind players so while the player is running, they could hear her chains impacting the ground just behind them as she runs to catch up with them. Being stuck by the Nightmare should cancel a players sprint which they could immediately start again. And, being based on the Siren, naturally, she would scream like a banshee while giving chase, breaking lights and dealing minor AoE damage to players in range (in addition to her chain whip attack). Her attacks would have an immunity to parry due to her distance and nature of her attack, but they could still be blocked and have their damage greatly reduced, additionally, in regards to Berserker, should could be stunned by a heavy attack from the Pulverizer. Between these fits of rage and chain whipping, she would enter into a slumped daze where her speed would greatly drop, her head would droop to look at the ground and she would not even attempt to fight back. These dazed periods should be very short lived, about 3 or 4 seconds, before she lifts her head back up and starts her chain whipping, screaming rage attacks again. She'd be about the size of a Cyst, making her harder to target through a crowd, and wouldn't damage fellow specimens.
In comparison to Fleshpounds you have an alternative that is, in short:
More debilitating and panic-inducing nature; less direct damage and bullet spongy
Advantages:
Disadvantages:
I also thought up a boss but at the same time it sounds kinda silly, I'm not sure what other people would think of it so I'll spare you from it.
The Buckler
Shield-Type Gorefast designed to offer limited bullet absorption from the front. "Bucklers" will try their best to face where ever most of their fire is coming from and can absorb most damage with 100% resistance but only to a point. Once this point has been reached the Buckler will fall to his back and can even lose his shield and shield arm. Behind the shield, "Bucklers" would be identical to a normal Gorefast but slower and deal less damage use a smaller blade. If a "Buckler" were to close in on a player, he would begin a short charge, knocking down the player for a very short time and possibly exposing them to danger. "Bucklers" would remain vulnerable to fire and electric weaponry but Berserkers would be able to exploit and kill Bucklers faster than almost any other perk with the use of melee weapons. Melee attacks, especially heavy attacks from a Pulverizer would destroy their shield but leave the specimen alive, albeit stunned and near death. As an added incentive for Berserkers to engage Bucklers, the shield could explode and increase the area of effect of a Pulveriser heavy attack, damaging other specimens over a larger radius.
The Bolter
Basically an electric version of the Husk. While a Husk would focus on dealing fire damage over time and creating panic with waves of flames amidst players, a Bolter would generally be more effective over range. With the ability to fire bolts of electricity, his attacks would basically be hitscan attacks, perhaps with a lower percentage to successfully connect against a moving target. Attacks would deal mild instant damage with no damage over time, but could temporarily disable a player for 1 second and slow them considerably while completely ignoring armor. The Bolter could respond to closing players with a AoE Shockwave that would deal light damage but, like the Buckler's Charge, knock players down for a second or two before being able to fire or move again. Additionally, the bolters attacks, whether a bolt of electricity or an AoE Shockwave, any electrical light source within a 3 meter radius of the bolt or Shockwave would be permanently destroyed. The Bolter would however, emit his own feint glow and when using his abilities, would randomly cause some lights, even destroyed ones, to flicker again before being blown out.
Nightmare
I tried to think up a 3rd specimen that could accompany, or even randomly replace Fleshpounds during their waves (50/50 chance?). Basically the Nightmare would be an enhanced version of the Siren with the speed and durability (almost) of a Fleshpound and attack of a Gorefast. A female specimen robed in a bloodied gown with broken metal restraints on her arms, legs, and head giving her a significant amount of armor. She could use broken metal chains attached to her arm restrains to lacerate players from greater distances. Her chains could reach all around her, perhaps in a 6 meter radius, with each impact dealing damage roughly on par with a Gorefast. Due to her range however, she could strike multiple players at once. She would also attack while on the move, even far behind players so while the player is running, they could hear her chains impacting the ground just behind them as she runs to catch up with them. Being stuck by the Nightmare should cancel a players sprint which they could immediately start again. And, being based on the Siren, naturally, she would scream like a banshee while giving chase, breaking lights and dealing minor AoE damage to players in range (in addition to her chain whip attack). Her attacks would have an immunity to parry due to her distance and nature of her attack, but they could still be blocked and have their damage greatly reduced, additionally, in regards to Berserker, should could be stunned by a heavy attack from the Pulverizer. Between these fits of rage and chain whipping, she would enter into a slumped daze where her speed would greatly drop, her head would droop to look at the ground and she would not even attempt to fight back. These dazed periods should be very short lived, about 3 or 4 seconds, before she lifts her head back up and starts her chain whipping, screaming rage attacks again. She'd be about the size of a Cyst, making her harder to target through a crowd, and wouldn't damage fellow specimens.
In comparison to Fleshpounds you have an alternative that is, in short:
More debilitating and panic-inducing nature; less direct damage and bullet spongy
Advantages:
- Blowing out lights
- Canceling grenades
- Hitting multiple players over a large radius
- Affecting players aim and vision over a large radius
- Smaller and more difficult to single out
- Able to run at great speeds and attack at the same time
- Canceling sprint attacks
Disadvantages:
- Less health
- Less damage
- Can have damage reduced further by blocking
- Can be more easily stunned
- Outside rage, virtually helpless
I also thought up a boss but at the same time it sounds kinda silly, I'm not sure what other people would think of it so I'll spare you from it.
M a button in a bunker at the center of the map starts air raid sirens and whoever from the two teams on opposite sides can get inside in time will survive. It's symmetrically placed and both teams have a door which slowly opens and closes. 
