I personally feel stress is an ambiguous term for the concept, for English atleast it is more about the duration of a sound, rather than the intensity of it.

I don't know Indian languages, but this can be subjective. A Mexican friend once told me that Spanish is easy because you pronounce it the way you write it... What he did not tell is that LL, J, H, B/V are all pronounced different in his language.

"/b, d, ɡ, ʝ/ are pronounced as fricatives or approximants [β, ð, ɣ, ʝ] in all places except after a pause, /n/, or /m/, or, in the case of /d/ and /ʝ/, after /l/. In the latter environments, they are stops [b, d, ɡ, ɟʝ] like English b, d, g, j but are fully voiced in all positions, unlike in English. When it is distinct from /ʝ/, /ʎ/ is realized as an approximant [ʎ] in all positions"

Although the rules may be easy for native speakers who grasp them intuitively, they can be a lot more complex for speakers of other languages, who are used to different "easy" rules.