Wfr Gr 28/32
The Werfer-Granate 28/32 was a 280mm rocket projectile carried singly or in pairs beneath each wing. This had been evolved from the Wfr.Gr. 21, a 210mm rocket (already modelled in AH for the A-8).
Pzschr
The Panzerschreck was an 88mm Wehrmacht rocket projectile, carried in sets of three under each wing. It had a maximum range to achieve effective penetration of about 100 meters.
Pb 1,2
The Panzerblitz 1 was a development of the Panzerschreck with a warhead twice as large, and which could be fired from a range of 200 meters. Eight Pb 1 rockets were carried under the wings in two jettisonable wooden crates, but the aircraft could not fire the rockets if it was flying faster than about 480 kph, which left it vulnerable to ground fire.
The Panzerblitz 2 was a modification of the 55mm R4M air-to-air rocket, containing a shaped-charge warhead and being launched from underwing racks holding either six or seven rockets.
Er 4+4x50
The Er 4 was a bomb adapter which would allow the ETC 250 fuselage rack to carry four 110-lb SC 50 bombs, which, with the two ETC 50 racks under each wing (standard on the F-8), allowed a total of 8 SC 50 bombs to be carried.
Pd 8,8cm
This one I can't find a reference to, unless (judging from the illustration) it's a quadruple mount for the Panzerblitz.
Incidentally, while the F-8/U-2 and F-8/U-3 were modified to be able to carry the 1,543-lb BT 700 and 3,098-lb BT 1400 (Bomben-Torpedo -- a bomb designed to be dropped at a shallow angle near an enemy ship, which would explode underneath the ship's hull), the SC 1800 was never carried by the F-8; the 2,205-lb SB 1000 and SC 1000 were the largest bombs carried in regular service, by G-series aircraft.
The SC 1800 was used in February and March of 1944 by specially-modified G-1s of NSG 20 for use against bridge targets. In order to carry the SC 1800, the G-1 required special tires and the removal of a large amount of standard hardware, including the 20mm cannon, and the aircraft required a 1,300 yard takeoff roll. On March 7, NSG 20 employed the SC 1800 in an attempt to take out the Remagen bridge.
There were experiments conducted with various other armament sets, including underwing gondolas each containing two 30mm Mk 103 cannon, underwing gondolas each containing three 15mm MG HF/15 cannon, an inverted installation of the SG 116 Zellendusche -- three 30mm Mk 103 cannon mounted in each wing to fire down at a 60° angle (the original installation, an anti-bomber weapon, firing up at a 60° angle), the SG 113A Förstersonde -- two 77mm recoilless cannon in each wing firing down, the firing being triggered by the magnetic field of a tank, the X 4 Ruhrstahl and X 7 Rotkäppchen guided missiles, and the BV 246 Hagelkorn glide bomb.
