常见升级类别
- 生命（Health）：+1 心；最直观、降低受挫。
- 剑（Sword）：提升单次伤害；打 Boss 时间更短。
- 箭（Arrows）：射速、伤害、弹量升级；远程更稳。
- 特殊能力：例如低血量时释放冲击波、击杀后回血、爆击时附带效果等。
- 被动加成：拾取范围增大、跑动不掉箭、滞空更久等。
三种游玩风格的推荐
1. 新手向：稳扎稳打
- 优先 生命：每两个升级里至少选 1 个心，目标是"前期 5–6 颗心、Boss 战前 7+ 颗"。
- 次选 剑：和生命二选一时，缺血选血、不缺血选剑。
- 避开"花活"型升级：等熟练了再考虑。
2. Boss 战向：求快
- 优先 剑：把 Boss 战时长从 3 分钟压到 1 分半。
- 次选 特殊能力：如"低血量冲击波"—— Boss 战关键时刻反杀用。
- 只在打 Boss 前攒满 5–6 颗心，再开始挑战。
3. 全收集向：均衡
- 心、剑、箭按 3 : 2 : 1 的比例分配，确保三项都不落后。
- 拿到新能力后立刻回头扫荡隐藏房间，把附近未拿的升级一次性补完。
- 中后期再开始考虑特殊能力，因为前 30 个升级决定基础盘。
升级与场景的搭配
跑酷挑战
耐心 / 跳跃
常给"移动 + 跳跃"类升级，挑战失败后选它能改善操作
限时战斗
剑 / 箭
快打类挑战的奖励倾向攻击向，缺攻击就选
生存挑战
生命 / 被动
长期挨打类挑战的奖励更倾向耐久向
隐藏房间
通用
奖励池比较杂，看缺什么就选什么
进度参考
Steam 成就里有三个相关里程碑，可以当作"自己进度"的参考：
- A Little Stronger：收集 1 个升级。
- Pretty Tough!：收集 10 个升级。
- Halfway There：收集 30 个升级。
- Fully Equipped：收集 60 个升级。
三选一时的"避坑"
- 不要每次都选花活型升级；前 10 个升级尽量把基础项（生命、剑、箭）补齐。
- 不要刻意追求"先拿哪个能力"——Islets 升级不影响能力，能力来自主线剧情/挑战，升级只改数值/特殊效果。
- 不要"存"升级不选——Islets 没有"延迟选"机制，挑战完成后会立刻弹出三选一。
Common upgrade types
- Health — +1 heart; simplest survivability boost.
- Sword — higher per-hit damage; faster boss kills.
- Arrows — fire rate, damage, or capacity; smoother ranged combat.
- Special effects — e.g. shockwave at low HP, life steal on kill, crit procs.
- Passives — pickup radius, no arrow drop in air, longer hang-time.
Three play-style recommendations
1. Beginner — play it safe
- Pick Health first: at least 1 of every 2 upgrades should be a heart; aim for 5–6 hearts early, 7+ before boss fights.
- Then Sword: if you don't need hearts, pick sword.
- Skip "fancy" effects until you feel comfortable.
2. Boss-rush — finish fast
- Prioritise Sword to compress boss fights from 3 minutes to 1.5.
- Then Special effects like "low-HP shockwave" for clutch moments.
- Build 5–6 hearts before challenging a boss.
3. Completionist — balanced
- Aim for a 3 : 2 : 1 ratio of Health / Sword / Bow.
- After every new ability, backtrack and sweep nearby rooms for missed upgrades.
- Don't invest in fancy effects until the first 30 are in.
Match upgrades to challenge type
Platforming
Mobility
Often reward movement and hang-time
Time attack
Sword / Bow
Offensive upgrades when you feel slow
Survival
Health / Passives
Defensive rewards when you keep getting hit
Hidden room
Anything
Mixed pool — pick what you lack
Progress milestones
- A Little Stronger — collect 1 upgrade.
- Pretty Tough! — collect 10 upgrades.
- Halfway There — collect 30 upgrades.
- Fully Equipped — collect 60 upgrades.
Common pitfalls
- Don't pick fancy effects every time; the first 10 should mostly fill Health / Sword / Bow.
- Don't chase "the right ability first" — upgrades are not abilities. Abilities come from story / story challenges.
- Don't "save" the choice — Islets pops the 3-way pick immediately after each challenge.
资料校验：References checked: TrueSteamAchievements · Wikipedia · Twinfinite