The phrase "achieved but not" is correct and usable in written English.
It can be used to indicate that something has been accomplished to a certain extent, but not fully or completely.
Example: "The project was achieved but not to the level of excellence we aimed for."
Alternatives: "accomplished yet not" or "completed but not".
Rex's rampant need for approval is ultimately achieved, but not exactly in the way he expects -- and viewers are much better off for that.
"A long-term sustainable impact on your life can be achieved but not by sitting about thinking if only I was slimmer, fitter, richer, then I would be happier," he said.
Cost reduction can be achieved, but not without structural change to the present legal education delivery model.
Minimum target HRR (>30 %) was achieved, but not sustained, by 3 patients, while 1 peaked within a normal target HRR 40-855 %).
Flying into space was the only goal he never achieved, but not for lack of trying.
Maybe we need to focus on our child's interests with passion being the ultimate prize if ever achieved, but not the goal of our parenting, nor the goal we want our children to solely pursue.
Ms. Hill's judgment is that she had the capability to achieve, but not the desire.
This may be difficult to achieve, but not more difficult than facing the consequences of yet another military intervention in the region.
The board agreed to set a minimum benchmark for the greenhouse gas emissions cuts that projects must achieve, but not until 2016.
GP clinic location and GP country of graduation had an independent statistically significant association with achieving (but not sustaining) normotension, with clinics in metropolitan areas and GPs graduated in Australia performing slightly better (see Table 3).
Consequences are what occur when accountability is not achieved, but consequences are not accountability.
