The Dungeon Demons, originally released as Pop-Top Horrors in the 1960s, were used in Miner’s Dragon Crest Medieval Fantasy Adventure Playset (circa 1983).
The Space Adventure set appeared in the 1980 Miner catalog (below) with the Star Base and Star Base Command Tower sets.
2 Warps to Neptune 
Ugh, face-palm Thursdays.
I had No. 3025 Armored Task Force. Not only did I have it, it was one of my favorite play sets ever. Everything about it was awesome, including the incredible amount of detail and especially the vehicles being in scale with the army men. There was nothing like lining them up in an armored tank column and getting them into attack position on the highest mounds of dirt/grass in my backyard.
Is that the set you’ve been trying to identify for the longest?
It is. Plaid Stallions posted one of those Space Adventure sets awhile back on his site, and I recognized those tanks immediately, but never found the military/army version. That delta-winged missile launcher one was my favorite; I remember trying so hard to rig it with a rubber band so I could actually “launch” the missile into enemy territory.