So far so good but,
WHAT TO ADD:
HP Regeneration skill
Sight skill (more sight)
More bullets (spread for example)
Inventory
Dungeon like areas with a MAP and bosses at the end for example every 5 levels (floors)
Some kind of "safe room" with shops and stuff would be great also
Quests that you can take from ppl in the "safe room"
Achievements and bonuses for unlocking them
Shop between areas (stages) where you can buy stuff that maybe appear randomly on your way up
More weapons: laser, bazooooka, sniper rifle,dual pistols etc.
Medium, Hard, Hell levels
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