This was really great. Suffering through several deaths at the hands of different enemies and then getting weapons that were better at dealing with them, good level design that rarely got me lost but didn’t feel like a corridor, good checkpoints that saved me right when I wanted to give up if I had to retrace my steps, and a tough battle at the end.
I particularly loved getting the bombs and dropping them next to those terrible green aliens. And the particle explosion for enemies is great too!