Agonya was formed in the beginning of the 90s and this tape came out in 1997,from their webpage(only in polish)I kind of understand that they were active `till 2007,or at the least that page is updated untill that year.
Here their webpage anyway.
Their music is an heavy form of HC punk sometime mixed with some ska passages,all sung in polish, the lyrics are reported only in their mother language.There is also a cover of the NoMeansNO,very fast yet cool.
Good recording and cover sleeve professionally printed.
And here the discogs page of this polish label...