I can barely remember the first Renegade game. I bought it back in the day and have never been so repulsed by a software purchase.
As for the authenticity of that title, I cannot vouch for that. But if you've seen the
C64 version, or the
Spectrum version. you'll note that the levels are consistent with their 8-bit counterparts (only the 8-bit versions got rave reviews). Even the theme levels (Stone Age, Ancient Egypt, etc.) are consistent with the other platforms, so I lean in the direction that this is the real thing, although it does seem there's more to the story since I have never seen an original, nor seen it reviewed, plus Imagine's logo is indeed missing. Perhaps a stolen beta?