Enjoyment 3/5 - While it is a spooky experience, the game could have used some more big moments. Just a chance for the frog to actually be a threat or chase the player or something. Right now it feels a tad bit empty.
Concept 4/5 - Honestly, a horror game is rare to see and the concept of an animal testing facility is one with a lot of potential. Not to mention a frog for the main enemy could lead for some scary stuff.
Presentation 3/5 - The facility feels a bit empty most of the time but the areas that do have decoration are very very nice. The UI could also use a little work and like carnalmantrap said, extra sounds would have been nice.
Use of Limitation 4/5 - The idea of needing to escape quickly is a very good way to implement the limitation into a horror game. But I do think it could have been done better as I took my sweet time and still made it out fine.
Overall, a concept with lots of potential but a bit lacking in its current state.