On the positive side, it's good for what it is, which is a small, sturdy, well built monosynth that's good for ambient and drone sounds in particular, and is a good sounding synth all around. The effects are OK too, not bad, although not comparable to say the Novation Peak. I think Dreadbox need to be acknowledged and praised for making a good monosynth at an accessible price - similar in form factor to, but way cheaper than, say a Moog Minitaur.
Negatives? The screen is tiny to the point of being unusable live. Or indeed even in daylight if your eyesight's Likewise, it's not a DX7, but as someone else pointed out, it has a fiddly interface - the sliders in particular are too small and fiddly for anyone without tiny hands. Also, comparing the Typhon to the Iridium, Argon8M or Wavestate isn't realistic in terms of both the much wider functionality and hands on, direct controls those synths provide - it simply does not compare to them (and arguably, they don't compare with each other, anyway). To claim that is to not know those other synths in any depth, and they are hugely capable - but progressively more costly too, to put it in perspective.
Overall, a good sounding well built synth that does what it does well. Personally though, I'll be selling mine because of the tiny sliders and impractical display.