There is no need to get excited over a win against the West Indies. The Windies are no longer one of the cricket powerhouses. But it was a good comfortable victory, and will do a lot to strengthen the morale of the Bangladeshi players. But for them, the big test is coming up. Their next match is against Australia on 20th and to be honest I have zero hopes for an upset. And then they will face the South Asian teams (AFG, IND, PAK). Unless they manage to win 3 out of their next 4 matches, I don't think that they can qualify for the playoffs.
I'm not getting excited my friend, I'm just saying that Bangladesh have a good chance to make the semi-finals. Yes I agree they have a big test coming up as they start to play two of the top teams in the tournament however I can see them winning 2 of the 4 matches coming up. I don't think they will beat Australia and India but the other two matches they can win if they play well. Then they just need New Zealand to drop a few matches and Bangladesh will be in with a shot to make the semi-finals. New Zealand's last couple of matches are against Australia and England and we never know what the WI can do on a good day so potentially New Zealand could lose 3-4 matches coming up so lets see what happens.