Well you can be forgiven for thinking this as the first kit is an obscure one:
https://www.scalemates.com/kits/palinton-0000-lituanica--557031
It's a vacuum form kit by Lithuanian company which, i believe, did not produce any other model. Well, technically it's "vacuum form", but the sheet is so thick, you could be forgiven for thinking it's a piece of tank armour with aircraft shaped dent. If you think Dora's offering is challenging to build you should try building Palinton's model. I am not nearly as adventurous and i keep mine in "never ever under any circumstances must it be built" stash.